• Aug. 2020
    Guangzhou Asia Pacific power and Technology Exhibition & introduction of new GDT / PPTC products
  • Jun. 2018
    China Great Wall and AOC qualified supplier
  • Mar. 2017
    High Surge H Series s electrical specifications improved
  • Mar. 2015
    New MOV products HE/Hot/C series Published
  • Dec. 2013
    Pass the TS 16949 International quality management system certification of automobile industry
  • May 2012
    20th anniversary of the establishment of the company /  Full introduction of halogen free environmental protection products
  • Apr. 2012
    Dongguan factory pass the IECQ QC080000 Approval
  • Jun. 2009
    TMOV Varistor obtained US patent
  • Apr. 2009
    Mass production of high energy SPD Disc
  • Mar. 2009
    Dongguan factory pass the OHSAS 18001:2007
  • Feb. 2009
    Environmental protection halogen free MOV trial production success
  • Dec. 2008
    The development of halogen-free MOV is completed
  • Nov. 2008
    Mass production of MOV for communication lightning protection
  • Oct. 2008
    Formulation development of Low Clamping Voltage type varistor completed
  • Apr. 2008
    Fire resistant varistor (MOV) development completed
  • Oct. 2006
    Development of overheat protection varistor completed
  • Jun. 2006
    Development of explosion proof MOV completed
  • Nov. 2005
    Successful development of surge protector B series
  • Oct. 2005
    Successful development of surge protector G Series
  • Mar. 2005
    Mass production of lead free environmentally friendly MOV
  • Nov. 2004
    Obtained ISO14001:2014 quality system certification.The SPDs (A series) has obtained a utility model patent in China
  • Apr. 2004
    Hold the first cross strait varistor Technology Seminar
  • Nov. 2003
    Obtain the patent right of US trademark
  • Sep. 2003
    The thermal cut-off protection type MOV has obtained a utility model patent in China
  • May 2003
    Obtain the patent right of Korean trademark
  • Nov. 2002
    The SPDs for Low voltage distribution system ( A series) obtained safety certification of China
  • Oct. 2002
    Hosted the annual meeting of China MOV society Obtained IECQ quality system certification
  • Jun. 2002
    MOV Obtained the CQC Quality Approval of China
  • May 2002
    Mass production of ceramic Gas Discharge Tubes(GDTs)
  • Oct. 2001
    The Surge Protective Devices (SPDs ) became into produce formally The Dongguan factory has obtained ISO 9000 quality system certification
  • Apr. 2001
    Shun Quan electrical Magerial (Dongguan) Co., Ltd. was established
  • Feb. 2000
    Production line of front to finish of MOV in Dongguan new factory
  • Mar. 1998
    MOV Obtained the Safety Approval of VDE
  • Sep. 1996
    Passed ISO9002 / IECQ quality system certification
  • Mar. 1995
    MOVs have obtained UL 1414 safety certification
  • Apr. 1994
    Low Voltage MOVs have obtained UL 1449 safety certification. Change the English name of the company to CeNtRa Science Corp.
  • Aug. 1993
    Medium & High Voltage MOVs have obtained UL 1449 safety certification
  • May 1992
    CNR was found
  • Aug. 2020
    Guangzhou Asia Pacific power and Technology Exhibition & introduction of new GDT / PPTC products
  • Jun. 2018
    China Great Wall and AOC qualified supplier
  • Mar. 2017
    High Surge H Series s electrical specifications improved
  • Mar. 2015
    New MOV products HE/Hot/C series Published
  • Dec. 2013
    Pass the TS 16949 International quality management system certification of automobile industry
  • May 2012
    20th anniversary of the establishment of the company /  Full introduction of halogen free environmental protection products
  • Apr. 2012
    Dongguan factory pass the IECQ QC080000 Approval
  • Jun. 2009
    TMOV Varistor obtained US patent
  • Apr. 2009
    Mass production of high energy SPD Disc
  • Mar. 2009
    Dongguan factory pass the OHSAS 18001:2007
  • Feb. 2009
    Environmental protection halogen free MOV trial production success
  • Dec. 2008
    The development of halogen-free MOV is completed
  • Nov. 2008
    Mass production of MOV for communication lightning protection
  • Oct. 2008
    Formulation development of Low Clamping Voltage type varistor completed
  • Apr. 2008
    Fire resistant varistor (MOV) development completed
  • Oct. 2006
    Development of overheat protection varistor completed
  • Jun. 2006
    Development of explosion proof MOV completed
  • Nov. 2005
    Successful development of surge protector B series
  • Oct. 2005
    Successful development of surge protector G Series
  • Mar. 2005
    Mass production of lead free environmentally friendly MOV
  • Nov. 2004
    Obtained ISO14001:2014 quality system certification.The SPDs (A series) has obtained a utility model patent in China
  • Apr. 2004
    Hold the first cross strait varistor Technology Seminar
  • Nov. 2003
    Obtain the patent right of US trademark
  • Sep. 2003
    The thermal cut-off protection type MOV has obtained a utility model patent in China
  • May 2003
    Obtain the patent right of Korean trademark
  • Nov. 2002
    The SPDs for Low voltage distribution system ( A series) obtained safety certification of China
  • Oct. 2002
    Hosted the annual meeting of China MOV society Obtained IECQ quality system certification
  • Jun. 2002
    MOV Obtained the CQC Quality Approval of China
  • May 2002
    Mass production of ceramic Gas Discharge Tubes(GDTs)
  • Oct. 2001
    The Surge Protective Devices (SPDs ) became into produce formally The Dongguan factory has obtained ISO 9000 quality system certification
  • Apr. 2001
    Shun Quan electrical Magerial (Dongguan) Co., Ltd. was established
  • Feb. 2000
    Production line of front to finish of MOV in Dongguan new factory
  • Mar. 1998
    MOV Obtained the Safety Approval of VDE
  • Sep. 1996
    Passed ISO9002 / IECQ quality system certification
  • Mar. 1995
    MOVs have obtained UL 1414 safety certification
  • Apr. 1994
    Low Voltage MOVs have obtained UL 1449 safety certification. Change the English name of the company to CeNtRa Science Corp.
  • Aug. 1993
    Medium & High Voltage MOVs have obtained UL 1449 safety certification
  • May 1992
    CNR was found
  • Aug. 2020
    Guangzhou Asia Pacific power and Technology Exhibition & introduction of new GDT / PPTC products
  • Jun. 2018
    China Great Wall and AOC qualified supplier
  • Mar. 2017
    High Surge H Series s electrical specifications improved
  • Mar. 2015
    New MOV products HE/Hot/C series Published
  • Dec. 2013
    Pass the TS 16949 International quality management system certification of automobile industry
  • May 2012
    20th anniversary of the establishment of the company /  Full introduction of halogen free environmental protection products
  • Apr. 2012
    Dongguan factory pass the IECQ QC080000 Approval
  • Jun. 2009
    TMOV Varistor obtained US patent
  • Apr. 2009
    Mass production of high energy SPD Disc
  • Mar. 2009
    Dongguan factory pass the OHSAS 18001:2007
  • Feb. 2009
    Environmental protection halogen free MOV trial production success
  • Dec. 2008
    The development of halogen-free MOV is completed
  • Nov. 2008
    Mass production of MOV for communication lightning protection
  • Oct. 2008
    Formulation development of Low Clamping Voltage type varistor completed
  • Apr. 2008
    Fire resistant varistor (MOV) development completed
  • Oct. 2006
    Development of overheat protection varistor completed
  • Jun. 2006
    Development of explosion proof MOV completed
  • Nov. 2005
    Successful development of surge protector B series
  • Oct. 2005
    Successful development of surge protector G Series
  • Mar. 2005
    Mass production of lead free environmentally friendly MOV
  • Nov. 2004
    Obtained ISO14001:2014 quality system certification.The SPDs (A series) has obtained a utility model patent in China
  • Apr. 2004
    Hold the first cross strait varistor Technology Seminar
  • Nov. 2003
    Obtain the patent right of US trademark
  • Sep. 2003
    The thermal cut-off protection type MOV has obtained a utility model patent in China
  • May 2003
    Obtain the patent right of Korean trademark
  • Nov. 2002
    The SPDs for Low voltage distribution system ( A series) obtained safety certification of China
  • Oct. 2002
    Hosted the annual meeting of China MOV society Obtained IECQ quality system certification
  • Jun. 2002
    MOV Obtained the CQC Quality Approval of China
  • May 2002
    Mass production of ceramic Gas Discharge Tubes(GDTs)
  • Oct. 2001
    The Surge Protective Devices (SPDs ) became into produce formally The Dongguan factory has obtained ISO 9000 quality system certification
  • Apr. 2001
    Shun Quan electrical Magerial (Dongguan) Co., Ltd. was established
  • Feb. 2000
    Production line of front to finish of MOV in Dongguan new factory
  • Mar. 1998
    MOV Obtained the Safety Approval of VDE
  • Sep. 1996
    Passed ISO9002 / IECQ quality system certification
  • Mar. 1995
    MOVs have obtained UL 1414 safety certification
  • Apr. 1994
    Low Voltage MOVs have obtained UL 1449 safety certification. Change the English name of the company to CeNtRa Science Corp.
  • Aug. 1993
    Medium & High Voltage MOVs have obtained UL 1449 safety certification
  • May 1992
    CNR was found
  • Aug. 2020
    Guangzhou Asia Pacific power and Technology Exhibition & introduction of new GDT / PPTC products
  • Jun. 2018
    China Great Wall and AOC qualified supplier
  • Mar. 2017
    High Surge H Series s electrical specifications improved
  • Mar. 2015
    New MOV products HE/Hot/C series Published
  • Dec. 2013
    Pass the TS 16949 International quality management system certification of automobile industry
  • May 2012
    20th anniversary of the establishment of the company /  Full introduction of halogen free environmental protection products
  • Apr. 2012
    Dongguan factory pass the IECQ QC080000 Approval
  • Jun. 2009
    TMOV Varistor obtained US patent
  • Apr. 2009
    Mass production of high energy SPD Disc
  • Mar. 2009
    Dongguan factory pass the OHSAS 18001:2007
  • Feb. 2009
    Environmental protection halogen free MOV trial production success
  • Dec. 2008
    The development of halogen-free MOV is completed
  • Nov. 2008
    Mass production of MOV for communication lightning protection
  • Oct. 2008
    Formulation development of Low Clamping Voltage type varistor completed
  • Apr. 2008
    Fire resistant varistor (MOV) development completed
  • Oct. 2006
    Development of overheat protection varistor completed
  • Jun. 2006
    Development of explosion proof MOV completed
  • Nov. 2005
    Successful development of surge protector B series
  • Oct. 2005
    Successful development of surge protector G Series
  • Mar. 2005
    Mass production of lead free environmentally friendly MOV
  • Nov. 2004
    Obtained ISO14001:2014 quality system certification.The SPDs (A series) has obtained a utility model patent in China
  • Apr. 2004
    Hold the first cross strait varistor Technology Seminar
  • Nov. 2003
    Obtain the patent right of US trademark
  • Sep. 2003
    The thermal cut-off protection type MOV has obtained a utility model patent in China
  • May 2003
    Obtain the patent right of Korean trademark
  • Nov. 2002
    The SPDs for Low voltage distribution system ( A series) obtained safety certification of China
  • Oct. 2002
    Hosted the annual meeting of China MOV society Obtained IECQ quality system certification
  • Jun. 2002
    MOV Obtained the CQC Quality Approval of China
  • May 2002
    Mass production of ceramic Gas Discharge Tubes(GDTs)
  • Oct. 2001
    The Surge Protective Devices (SPDs ) became into produce formally The Dongguan factory has obtained ISO 9000 quality system certification
  • Apr. 2001
    Shun Quan electrical Magerial (Dongguan) Co., Ltd. was established
  • Feb. 2000
    Production line of front to finish of MOV in Dongguan new factory
  • Mar. 1998
    MOV Obtained the Safety Approval of VDE
  • Sep. 1996
    Passed ISO9002 / IECQ quality system certification
  • Mar. 1995
    MOVs have obtained UL 1414 safety certification
  • Apr. 1994
    Low Voltage MOVs have obtained UL 1449 safety certification. Change the English name of the company to CeNtRa Science Corp.
  • Aug. 1993
    Medium & High Voltage MOVs have obtained UL 1449 safety certification
  • May 1992
    CNR was found
  • Aug. 2020
    Guangzhou Asia Pacific power and Technology Exhibition & introduction of new GDT / PPTC products
  • Jun. 2018
    China Great Wall and AOC qualified supplier
  • Mar. 2017
    High Surge H Series s electrical specifications improved
  • Mar. 2015
    New MOV products HE/Hot/C series Published
  • Dec. 2013
    Pass the TS 16949 International quality management system certification of automobile industry
  • May 2012
    20th anniversary of the establishment of the company /  Full introduction of halogen free environmental protection products
  • Apr. 2012
    Dongguan factory pass the IECQ QC080000 Approval
  • Jun. 2009
    TMOV Varistor obtained US patent
  • Apr. 2009
    Mass production of high energy SPD Disc
  • Mar. 2009
    Dongguan factory pass the OHSAS 18001:2007
  • Feb. 2009
    Environmental protection halogen free MOV trial production success
  • Dec. 2008
    The development of halogen-free MOV is completed
  • Nov. 2008
    Mass production of MOV for communication lightning protection
  • Oct. 2008
    Formulation development of Low Clamping Voltage type varistor completed
  • Apr. 2008
    Fire resistant varistor (MOV) development completed
  • Oct. 2006
    Development of overheat protection varistor completed
  • Jun. 2006
    Development of explosion proof MOV completed
  • Nov. 2005
    Successful development of surge protector B series
  • Oct. 2005
    Successful development of surge protector G Series
  • Mar. 2005
    Mass production of lead free environmentally friendly MOV
  • Nov. 2004
    Obtained ISO14001:2014 quality system certification.The SPDs (A series) has obtained a utility model patent in China
  • Apr. 2004
    Hold the first cross strait varistor Technology Seminar
  • Nov. 2003
    Obtain the patent right of US trademark
  • Sep. 2003
    The thermal cut-off protection type MOV has obtained a utility model patent in China
  • May 2003
    Obtain the patent right of Korean trademark
  • Nov. 2002
    The SPDs for Low voltage distribution system ( A series) obtained safety certification of China
  • Oct. 2002
    Hosted the annual meeting of China MOV society Obtained IECQ quality system certification
  • Jun. 2002
    MOV Obtained the CQC Quality Approval of China
  • May 2002
    Mass production of ceramic Gas Discharge Tubes(GDTs)
  • Oct. 2001
    The Surge Protective Devices (SPDs ) became into produce formally The Dongguan factory has obtained ISO 9000 quality system certification
  • Apr. 2001
    Shun Quan electrical Magerial (Dongguan) Co., Ltd. was established
  • Feb. 2000
    Production line of front to finish of MOV in Dongguan new factory
  • Mar. 1998
    MOV Obtained the Safety Approval of VDE
  • Sep. 1996
    Passed ISO9002 / IECQ quality system certification
  • Mar. 1995
    MOVs have obtained UL 1414 safety certification
  • Apr. 1994
    Low Voltage MOVs have obtained UL 1449 safety certification. Change the English name of the company to CeNtRa Science Corp.
  • Aug. 1993
    Medium & High Voltage MOVs have obtained UL 1449 safety certification
  • May 1992
    CNR was found
  • Aug. 2020
    Guangzhou Asia Pacific power and Technology Exhibition & introduction of new GDT / PPTC products
  • Jun. 2018
    China Great Wall and AOC qualified supplier
  • Mar. 2017
    High Surge H Series s electrical specifications improved
  • Mar. 2015
    New MOV products HE/Hot/C series Published
  • Dec. 2013
    Pass the TS 16949 International quality management system certification of automobile industry
  • May 2012
    20th anniversary of the establishment of the company /  Full introduction of halogen free environmental protection products
  • Apr. 2012
    Dongguan factory pass the IECQ QC080000 Approval
  • Jun. 2009
    TMOV Varistor obtained US patent
  • Apr. 2009
    Mass production of high energy SPD Disc
  • Mar. 2009
    Dongguan factory pass the OHSAS 18001:2007
  • Feb. 2009
    Environmental protection halogen free MOV trial production success
  • Dec. 2008
    The development of halogen-free MOV is completed
  • Nov. 2008
    Mass production of MOV for communication lightning protection
  • Oct. 2008
    Formulation development of Low Clamping Voltage type varistor completed
  • Apr. 2008
    Fire resistant varistor (MOV) development completed
  • Oct. 2006
    Development of overheat protection varistor completed
  • Jun. 2006
    Development of explosion proof MOV completed
  • Nov. 2005
    Successful development of surge protector B series
  • Oct. 2005
    Successful development of surge protector G Series
  • Mar. 2005
    Mass production of lead free environmentally friendly MOV
  • Nov. 2004
    Obtained ISO14001:2014 quality system certification.The SPDs (A series) has obtained a utility model patent in China
  • Apr. 2004
    Hold the first cross strait varistor Technology Seminar
  • Nov. 2003
    Obtain the patent right of US trademark
  • Sep. 2003
    The thermal cut-off protection type MOV has obtained a utility model patent in China
  • May 2003
    Obtain the patent right of Korean trademark
  • Nov. 2002
    The SPDs for Low voltage distribution system ( A series) obtained safety certification of China
  • Oct. 2002
    Hosted the annual meeting of China MOV society Obtained IECQ quality system certification
  • Jun. 2002
    MOV Obtained the CQC Quality Approval of China
  • May 2002
    Mass production of ceramic Gas Discharge Tubes(GDTs)
  • Oct. 2001
    The Surge Protective Devices (SPDs ) became into produce formally The Dongguan factory has obtained ISO 9000 quality system certification
  • Apr. 2001
    Shun Quan electrical Magerial (Dongguan) Co., Ltd. was established
  • Feb. 2000
    Production line of front to finish of MOV in Dongguan new factory
  • Mar. 1998
    MOV Obtained the Safety Approval of VDE
  • Sep. 1996
    Passed ISO9002 / IECQ quality system certification
  • Mar. 1995
    MOVs have obtained UL 1414 safety certification
  • Apr. 1994
    Low Voltage MOVs have obtained UL 1449 safety certification. Change the English name of the company to CeNtRa Science Corp.
  • Aug. 1993
    Medium & High Voltage MOVs have obtained UL 1449 safety certification
  • May 1992
    CNR was found
  • Aug. 2020
    Guangzhou Asia Pacific power and Technology Exhibition & introduction of new GDT / PPTC products
  • Jun. 2018
    China Great Wall and AOC qualified supplier
  • Mar. 2017
    High Surge H Series s electrical specifications improved
  • Mar. 2015
    New MOV products HE/Hot/C series Published
  • Dec. 2013
    Pass the TS 16949 International quality management system certification of automobile industry
  • May 2012
    20th anniversary of the establishment of the company /  Full introduction of halogen free environmental protection products
  • Apr. 2012
    Dongguan factory pass the IECQ QC080000 Approval
  • Jun. 2009
    TMOV Varistor obtained US patent
  • Apr. 2009
    Mass production of high energy SPD Disc
  • Mar. 2009
    Dongguan factory pass the OHSAS 18001:2007
  • Feb. 2009
    Environmental protection halogen free MOV trial production success
  • Dec. 2008
    The development of halogen-free MOV is completed
  • Nov. 2008
    Mass production of MOV for communication lightning protection
  • Oct. 2008
    Formulation development of Low Clamping Voltage type varistor completed
  • Apr. 2008
    Fire resistant varistor (MOV) development completed
  • Oct. 2006
    Development of overheat protection varistor completed
  • Jun. 2006
    Development of explosion proof MOV completed
  • Nov. 2005
    Successful development of surge protector B series
  • Oct. 2005
    Successful development of surge protector G Series
  • Mar. 2005
    Mass production of lead free environmentally friendly MOV
  • Nov. 2004
    Obtained ISO14001:2014 quality system certification.The SPDs (A series) has obtained a utility model patent in China
  • Apr. 2004
    Hold the first cross strait varistor Technology Seminar
  • Nov. 2003
    Obtain the patent right of US trademark
  • Sep. 2003
    The thermal cut-off protection type MOV has obtained a utility model patent in China
  • May 2003
    Obtain the patent right of Korean trademark
  • Nov. 2002
    The SPDs for Low voltage distribution system ( A series) obtained safety certification of China
  • Oct. 2002
    Hosted the annual meeting of China MOV society Obtained IECQ quality system certification
  • Jun. 2002
    MOV Obtained the CQC Quality Approval of China
  • May 2002
    Mass production of ceramic Gas Discharge Tubes(GDTs)
  • Oct. 2001
    The Surge Protective Devices (SPDs ) became into produce formally The Dongguan factory has obtained ISO 9000 quality system certification
  • Apr. 2001
    Shun Quan electrical Magerial (Dongguan) Co., Ltd. was established
  • Feb. 2000
    Production line of front to finish of MOV in Dongguan new factory
  • Mar. 1998
    MOV Obtained the Safety Approval of VDE
  • Sep. 1996
    Passed ISO9002 / IECQ quality system certification
  • Mar. 1995
    MOVs have obtained UL 1414 safety certification
  • Apr. 1994
    Low Voltage MOVs have obtained UL 1449 safety certification. Change the English name of the company to CeNtRa Science Corp.
  • Aug. 1993
    Medium & High Voltage MOVs have obtained UL 1449 safety certification
  • May 1992
    CNR was found
  • Aug. 2020
    Guangzhou Asia Pacific power and Technology Exhibition & introduction of new GDT / PPTC products
  • Jun. 2018
    China Great Wall and AOC qualified supplier
  • Mar. 2017
    High Surge H Series s electrical specifications improved
  • Mar. 2015
    New MOV products HE/Hot/C series Published
  • Dec. 2013
    Pass the TS 16949 International quality management system certification of automobile industry
  • May 2012
    20th anniversary of the establishment of the company /  Full introduction of halogen free environmental protection products
  • Apr. 2012
    Dongguan factory pass the IECQ QC080000 Approval
  • Jun. 2009
    TMOV Varistor obtained US patent
  • Apr. 2009
    Mass production of high energy SPD Disc
  • Mar. 2009
    Dongguan factory pass the OHSAS 18001:2007
  • Feb. 2009
    Environmental protection halogen free MOV trial production success
  • Dec. 2008
    The development of halogen-free MOV is completed
  • Nov. 2008
    Mass production of MOV for communication lightning protection
  • Oct. 2008
    Formulation development of Low Clamping Voltage type varistor completed
  • Apr. 2008
    Fire resistant varistor (MOV) development completed
  • Oct. 2006
    Development of overheat protection varistor completed
  • Jun. 2006
    Development of explosion proof MOV completed
  • Nov. 2005
    Successful development of surge protector B series
  • Oct. 2005
    Successful development of surge protector G Series
  • Mar. 2005
    Mass production of lead free environmentally friendly MOV
  • Nov. 2004
    Obtained ISO14001:2014 quality system certification.The SPDs (A series) has obtained a utility model patent in China
  • Apr. 2004
    Hold the first cross strait varistor Technology Seminar
  • Nov. 2003
    Obtain the patent right of US trademark
  • Sep. 2003
    The thermal cut-off protection type MOV has obtained a utility model patent in China
  • May 2003
    Obtain the patent right of Korean trademark
  • Nov. 2002
    The SPDs for Low voltage distribution system ( A series) obtained safety certification of China
  • Oct. 2002
    Hosted the annual meeting of China MOV society Obtained IECQ quality system certification
  • Jun. 2002
    MOV Obtained the CQC Quality Approval of China
  • May 2002
    Mass production of ceramic Gas Discharge Tubes(GDTs)
  • Oct. 2001
    The Surge Protective Devices (SPDs ) became into produce formally The Dongguan factory has obtained ISO 9000 quality system certification
  • Apr. 2001
    Shun Quan electrical Magerial (Dongguan) Co., Ltd. was established
  • Feb. 2000
    Production line of front to finish of MOV in Dongguan new factory
  • Mar. 1998
    MOV Obtained the Safety Approval of VDE
  • Sep. 1996
    Passed ISO9002 / IECQ quality system certification
  • Mar. 1995
    MOVs have obtained UL 1414 safety certification
  • Apr. 1994
    Low Voltage MOVs have obtained UL 1449 safety certification. Change the English name of the company to CeNtRa Science Corp.
  • Aug. 1993
    Medium & High Voltage MOVs have obtained UL 1449 safety certification
  • May 1992
    CNR was found
  • Aug. 2020
    Guangzhou Asia Pacific power and Technology Exhibition & introduction of new GDT / PPTC products
  • Jun. 2018
    China Great Wall and AOC qualified supplier
  • Mar. 2017
    High Surge H Series s electrical specifications improved
  • Mar. 2015
    New MOV products HE/Hot/C series Published
  • Dec. 2013
    Pass the TS 16949 International quality management system certification of automobile industry
  • May 2012
    20th anniversary of the establishment of the company /  Full introduction of halogen free environmental protection products
  • Apr. 2012
    Dongguan factory pass the IECQ QC080000 Approval
  • Jun. 2009
    TMOV Varistor obtained US patent
  • Apr. 2009
    Mass production of high energy SPD Disc
  • Mar. 2009
    Dongguan factory pass the OHSAS 18001:2007
  • Feb. 2009
    Environmental protection halogen free MOV trial production success
  • Dec. 2008
    The development of halogen-free MOV is completed
  • Nov. 2008
    Mass production of MOV for communication lightning protection
  • Oct. 2008
    Formulation development of Low Clamping Voltage type varistor completed
  • Apr. 2008
    Fire resistant varistor (MOV) development completed
  • Oct. 2006
    Development of overheat protection varistor completed
  • Jun. 2006
    Development of explosion proof MOV completed
  • Nov. 2005
    Successful development of surge protector B series
  • Oct. 2005
    Successful development of surge protector G Series
  • Mar. 2005
    Mass production of lead free environmentally friendly MOV
  • Nov. 2004
    Obtained ISO14001:2014 quality system certification.The SPDs (A series) has obtained a utility model patent in China
  • Apr. 2004
    Hold the first cross strait varistor Technology Seminar
  • Nov. 2003
    Obtain the patent right of US trademark
  • Sep. 2003
    The thermal cut-off protection type MOV has obtained a utility model patent in China
  • May 2003
    Obtain the patent right of Korean trademark
  • Nov. 2002
    The SPDs for Low voltage distribution system ( A series) obtained safety certification of China
  • Oct. 2002
    Hosted the annual meeting of China MOV society Obtained IECQ quality system certification
  • Jun. 2002
    MOV Obtained the CQC Quality Approval of China
  • May 2002
    Mass production of ceramic Gas Discharge Tubes(GDTs)
  • Oct. 2001
    The Surge Protective Devices (SPDs ) became into produce formally The Dongguan factory has obtained ISO 9000 quality system certification
  • Apr. 2001
    Shun Quan electrical Magerial (Dongguan) Co., Ltd. was established
  • Feb. 2000
    Production line of front to finish of MOV in Dongguan new factory
  • Mar. 1998
    MOV Obtained the Safety Approval of VDE
  • Sep. 1996
    Passed ISO9002 / IECQ quality system certification
  • Mar. 1995
    MOVs have obtained UL 1414 safety certification
  • Apr. 1994
    Low Voltage MOVs have obtained UL 1449 safety certification. Change the English name of the company to CeNtRa Science Corp.
  • Aug. 1993
    Medium & High Voltage MOVs have obtained UL 1449 safety certification
  • May 1992
    CNR was found
  • Aug. 2020
    Guangzhou Asia Pacific power and Technology Exhibition & introduction of new GDT / PPTC products
  • Jun. 2018
    China Great Wall and AOC qualified supplier
  • Mar. 2017
    High Surge H Series s electrical specifications improved
  • Mar. 2015
    New MOV products HE/Hot/C series Published
  • Dec. 2013
    Pass the TS 16949 International quality management system certification of automobile industry
  • May 2012
    20th anniversary of the establishment of the company /  Full introduction of halogen free environmental protection products
  • Apr. 2012
    Dongguan factory pass the IECQ QC080000 Approval
  • Jun. 2009
    TMOV Varistor obtained US patent
  • Apr. 2009
    Mass production of high energy SPD Disc
  • Mar. 2009
    Dongguan factory pass the OHSAS 18001:2007
  • Feb. 2009
    Environmental protection halogen free MOV trial production success
  • Dec. 2008
    The development of halogen-free MOV is completed
  • Nov. 2008
    Mass production of MOV for communication lightning protection
  • Oct. 2008
    Formulation development of Low Clamping Voltage type varistor completed
  • Apr. 2008
    Fire resistant varistor (MOV) development completed
  • Oct. 2006
    Development of overheat protection varistor completed
  • Jun. 2006
    Development of explosion proof MOV completed
  • Nov. 2005
    Successful development of surge protector B series
  • Oct. 2005
    Successful development of surge protector G Series
  • Mar. 2005
    Mass production of lead free environmentally friendly MOV
  • Nov. 2004
    Obtained ISO14001:2014 quality system certification.The SPDs (A series) has obtained a utility model patent in China
  • Apr. 2004
    Hold the first cross strait varistor Technology Seminar
  • Nov. 2003
    Obtain the patent right of US trademark
  • Sep. 2003
    The thermal cut-off protection type MOV has obtained a utility model patent in China
  • May 2003
    Obtain the patent right of Korean trademark
  • Nov. 2002
    The SPDs for Low voltage distribution system ( A series) obtained safety certification of China
  • Oct. 2002
    Hosted the annual meeting of China MOV society Obtained IECQ quality system certification
  • Jun. 2002
    MOV Obtained the CQC Quality Approval of China
  • May 2002
    Mass production of ceramic Gas Discharge Tubes(GDTs)
  • Oct. 2001
    The Surge Protective Devices (SPDs ) became into produce formally The Dongguan factory has obtained ISO 9000 quality system certification
  • Apr. 2001
    Shun Quan electrical Magerial (Dongguan) Co., Ltd. was established
  • Feb. 2000
    Production line of front to finish of MOV in Dongguan new factory
  • Mar. 1998
    MOV Obtained the Safety Approval of VDE
  • Sep. 1996
    Passed ISO9002 / IECQ quality system certification
  • Mar. 1995
    MOVs have obtained UL 1414 safety certification
  • Apr. 1994
    Low Voltage MOVs have obtained UL 1449 safety certification. Change the English name of the company to CeNtRa Science Corp.
  • Aug. 1993
    Medium & High Voltage MOVs have obtained UL 1449 safety certification
  • May 1992
    CNR was found
  • Aug. 2020
    Guangzhou Asia Pacific power and Technology Exhibition & introduction of new GDT / PPTC products
  • Jun. 2018
    China Great Wall and AOC qualified supplier
  • Mar. 2017
    High Surge H Series s electrical specifications improved
  • Mar. 2015
    New MOV products HE/Hot/C series Published
  • Dec. 2013
    Pass the TS 16949 International quality management system certification of automobile industry
  • May 2012
    20th anniversary of the establishment of the company /  Full introduction of halogen free environmental protection products
  • Apr. 2012
    Dongguan factory pass the IECQ QC080000 Approval
  • Jun. 2009
    TMOV Varistor obtained US patent
  • Apr. 2009
    Mass production of high energy SPD Disc
  • Mar. 2009
    Dongguan factory pass the OHSAS 18001:2007
  • Feb. 2009
    Environmental protection halogen free MOV trial production success
  • Dec. 2008
    The development of halogen-free MOV is completed
  • Nov. 2008
    Mass production of MOV for communication lightning protection
  • Oct. 2008
    Formulation development of Low Clamping Voltage type varistor completed
  • Apr. 2008
    Fire resistant varistor (MOV) development completed
  • Oct. 2006
    Development of overheat protection varistor completed
  • Jun. 2006
    Development of explosion proof MOV completed
  • Nov. 2005
    Successful development of surge protector B series
  • Oct. 2005
    Successful development of surge protector G Series
  • Mar. 2005
    Mass production of lead free environmentally friendly MOV
  • Nov. 2004
    Obtained ISO14001:2014 quality system certification.The SPDs (A series) has obtained a utility model patent in China
  • Apr. 2004
    Hold the first cross strait varistor Technology Seminar
  • Nov. 2003
    Obtain the patent right of US trademark
  • Sep. 2003
    The thermal cut-off protection type MOV has obtained a utility model patent in China
  • May 2003
    Obtain the patent right of Korean trademark
  • Nov. 2002
    The SPDs for Low voltage distribution system ( A series) obtained safety certification of China
  • Oct. 2002
    Hosted the annual meeting of China MOV society Obtained IECQ quality system certification
  • Jun. 2002
    MOV Obtained the CQC Quality Approval of China
  • May 2002
    Mass production of ceramic Gas Discharge Tubes(GDTs)
  • Oct. 2001
    The Surge Protective Devices (SPDs ) became into produce formally The Dongguan factory has obtained ISO 9000 quality system certification
  • Apr. 2001
    Shun Quan electrical Magerial (Dongguan) Co., Ltd. was established
  • Feb. 2000
    Production line of front to finish of MOV in Dongguan new factory
  • Mar. 1998
    MOV Obtained the Safety Approval of VDE
  • Sep. 1996
    Passed ISO9002 / IECQ quality system certification
  • Mar. 1995
    MOVs have obtained UL 1414 safety certification
  • Apr. 1994
    Low Voltage MOVs have obtained UL 1449 safety certification. Change the English name of the company to CeNtRa Science Corp.
  • Aug. 1993
    Medium & High Voltage MOVs have obtained UL 1449 safety certification
  • May 1992
    CNR was found
  • Aug. 2020
    Guangzhou Asia Pacific power and Technology Exhibition & introduction of new GDT / PPTC products
  • Jun. 2018
    China Great Wall and AOC qualified supplier
  • Mar. 2017
    High Surge H Series s electrical specifications improved
  • Mar. 2015
    New MOV products HE/Hot/C series Published
  • Dec. 2013
    Pass the TS 16949 International quality management system certification of automobile industry
  • May 2012
    20th anniversary of the establishment of the company /  Full introduction of halogen free environmental protection products
  • Apr. 2012
    Dongguan factory pass the IECQ QC080000 Approval
  • Jun. 2009
    TMOV Varistor obtained US patent
  • Apr. 2009
    Mass production of high energy SPD Disc
  • Mar. 2009
    Dongguan factory pass the OHSAS 18001:2007
  • Feb. 2009
    Environmental protection halogen free MOV trial production success
  • Dec. 2008
    The development of halogen-free MOV is completed
  • Nov. 2008
    Mass production of MOV for communication lightning protection
  • Oct. 2008
    Formulation development of Low Clamping Voltage type varistor completed
  • Apr. 2008
    Fire resistant varistor (MOV) development completed
  • Oct. 2006
    Development of overheat protection varistor completed
  • Jun. 2006
    Development of explosion proof MOV completed
  • Nov. 2005
    Successful development of surge protector B series
  • Oct. 2005
    Successful development of surge protector G Series
  • Mar. 2005
    Mass production of lead free environmentally friendly MOV
  • Nov. 2004
    Obtained ISO14001:2014 quality system certification.The SPDs (A series) has obtained a utility model patent in China
  • Apr. 2004
    Hold the first cross strait varistor Technology Seminar
  • Nov. 2003
    Obtain the patent right of US trademark
  • Sep. 2003
    The thermal cut-off protection type MOV has obtained a utility model patent in China
  • May 2003
    Obtain the patent right of Korean trademark
  • Nov. 2002
    The SPDs for Low voltage distribution system ( A series) obtained safety certification of China
  • Oct. 2002
    Hosted the annual meeting of China MOV society Obtained IECQ quality system certification
  • Jun. 2002
    MOV Obtained the CQC Quality Approval of China
  • May 2002
    Mass production of ceramic Gas Discharge Tubes(GDTs)
  • Oct. 2001
    The Surge Protective Devices (SPDs ) became into produce formally The Dongguan factory has obtained ISO 9000 quality system certification
  • Apr. 2001
    Shun Quan electrical Magerial (Dongguan) Co., Ltd. was established
  • Feb. 2000
    Production line of front to finish of MOV in Dongguan new factory
  • Mar. 1998
    MOV Obtained the Safety Approval of VDE
  • Sep. 1996
    Passed ISO9002 / IECQ quality system certification
  • Mar. 1995
    MOVs have obtained UL 1414 safety certification
  • Apr. 1994
    Low Voltage MOVs have obtained UL 1449 safety certification. Change the English name of the company to CeNtRa Science Corp.
  • Aug. 1993
    Medium & High Voltage MOVs have obtained UL 1449 safety certification
  • May 1992
    CNR was found
  • Aug. 2020
    Guangzhou Asia Pacific power and Technology Exhibition & introduction of new GDT / PPTC products
  • Jun. 2018
    China Great Wall and AOC qualified supplier
  • Mar. 2017
    High Surge H Series s electrical specifications improved
  • Mar. 2015
    New MOV products HE/Hot/C series Published
  • Dec. 2013
    Pass the TS 16949 International quality management system certification of automobile industry
  • May 2012
    20th anniversary of the establishment of the company /  Full introduction of halogen free environmental protection products
  • Apr. 2012
    Dongguan factory pass the IECQ QC080000 Approval
  • Jun. 2009
    TMOV Varistor obtained US patent
  • Apr. 2009
    Mass production of high energy SPD Disc
  • Mar. 2009
    Dongguan factory pass the OHSAS 18001:2007
  • Feb. 2009
    Environmental protection halogen free MOV trial production success
  • Dec. 2008
    The development of halogen-free MOV is completed
  • Nov. 2008
    Mass production of MOV for communication lightning protection
  • Oct. 2008
    Formulation development of Low Clamping Voltage type varistor completed
  • Apr. 2008
    Fire resistant varistor (MOV) development completed
  • Oct. 2006
    Development of overheat protection varistor completed
  • Jun. 2006
    Development of explosion proof MOV completed
  • Nov. 2005
    Successful development of surge protector B series
  • Oct. 2005
    Successful development of surge protector G Series
  • Mar. 2005
    Mass production of lead free environmentally friendly MOV
  • Nov. 2004
    Obtained ISO14001:2014 quality system certification.The SPDs (A series) has obtained a utility model patent in China
  • Apr. 2004
    Hold the first cross strait varistor Technology Seminar
  • Nov. 2003
    Obtain the patent right of US trademark
  • Sep. 2003
    The thermal cut-off protection type MOV has obtained a utility model patent in China
  • May 2003
    Obtain the patent right of Korean trademark
  • Nov. 2002
    The SPDs for Low voltage distribution system ( A series) obtained safety certification of China
  • Oct. 2002
    Hosted the annual meeting of China MOV society Obtained IECQ quality system certification
  • Jun. 2002
    MOV Obtained the CQC Quality Approval of China
  • May 2002
    Mass production of ceramic Gas Discharge Tubes(GDTs)
  • Oct. 2001
    The Surge Protective Devices (SPDs ) became into produce formally The Dongguan factory has obtained ISO 9000 quality system certification
  • Apr. 2001
    Shun Quan electrical Magerial (Dongguan) Co., Ltd. was established
  • Feb. 2000
    Production line of front to finish of MOV in Dongguan new factory
  • Mar. 1998
    MOV Obtained the Safety Approval of VDE
  • Sep. 1996
    Passed ISO9002 / IECQ quality system certification
  • Mar. 1995
    MOVs have obtained UL 1414 safety certification
  • Apr. 1994
    Low Voltage MOVs have obtained UL 1449 safety certification. Change the English name of the company to CeNtRa Science Corp.
  • Aug. 1993
    Medium & High Voltage MOVs have obtained UL 1449 safety certification
  • May 1992
    CNR was found
  • Aug. 2020
    Guangzhou Asia Pacific power and Technology Exhibition & introduction of new GDT / PPTC products
  • Jun. 2018
    China Great Wall and AOC qualified supplier
  • Mar. 2017
    High Surge H Series s electrical specifications improved
  • Mar. 2015
    New MOV products HE/Hot/C series Published
  • Dec. 2013
    Pass the TS 16949 International quality management system certification of automobile industry
  • May 2012
    20th anniversary of the establishment of the company /  Full introduction of halogen free environmental protection products
  • Apr. 2012
    Dongguan factory pass the IECQ QC080000 Approval
  • Jun. 2009
    TMOV Varistor obtained US patent
  • Apr. 2009
    Mass production of high energy SPD Disc
  • Mar. 2009
    Dongguan factory pass the OHSAS 18001:2007
  • Feb. 2009
    Environmental protection halogen free MOV trial production success
  • Dec. 2008
    The development of halogen-free MOV is completed
  • Nov. 2008
    Mass production of MOV for communication lightning protection
  • Oct. 2008
    Formulation development of Low Clamping Voltage type varistor completed
  • Apr. 2008
    Fire resistant varistor (MOV) development completed
  • Oct. 2006
    Development of overheat protection varistor completed
  • Jun. 2006
    Development of explosion proof MOV completed
  • Nov. 2005
    Successful development of surge protector B series
  • Oct. 2005
    Successful development of surge protector G Series
  • Mar. 2005
    Mass production of lead free environmentally friendly MOV
  • Nov. 2004
    Obtained ISO14001:2014 quality system certification.The SPDs (A series) has obtained a utility model patent in China
  • Apr. 2004
    Hold the first cross strait varistor Technology Seminar
  • Nov. 2003
    Obtain the patent right of US trademark
  • Sep. 2003
    The thermal cut-off protection type MOV has obtained a utility model patent in China
  • May 2003
    Obtain the patent right of Korean trademark
  • Nov. 2002
    The SPDs for Low voltage distribution system ( A series) obtained safety certification of China
  • Oct. 2002
    Hosted the annual meeting of China MOV society Obtained IECQ quality system certification
  • Jun. 2002
    MOV Obtained the CQC Quality Approval of China
  • May 2002
    Mass production of ceramic Gas Discharge Tubes(GDTs)
  • Oct. 2001
    The Surge Protective Devices (SPDs ) became into produce formally The Dongguan factory has obtained ISO 9000 quality system certification
  • Apr. 2001
    Shun Quan electrical Magerial (Dongguan) Co., Ltd. was established
  • Feb. 2000
    Production line of front to finish of MOV in Dongguan new factory
  • Mar. 1998
    MOV Obtained the Safety Approval of VDE
  • Sep. 1996
    Passed ISO9002 / IECQ quality system certification
  • Mar. 1995
    MOVs have obtained UL 1414 safety certification
  • Apr. 1994
    Low Voltage MOVs have obtained UL 1449 safety certification. Change the English name of the company to CeNtRa Science Corp.
  • Aug. 1993
    Medium & High Voltage MOVs have obtained UL 1449 safety certification
  • May 1992
    CNR was found
  • Aug. 2020
    Guangzhou Asia Pacific power and Technology Exhibition & introduction of new GDT / PPTC products
  • Jun. 2018
    China Great Wall and AOC qualified supplier
  • Mar. 2017
    High Surge H Series s electrical specifications improved
  • Mar. 2015
    New MOV products HE/Hot/C series Published
  • Dec. 2013
    Pass the TS 16949 International quality management system certification of automobile industry
  • May 2012
    20th anniversary of the establishment of the company /  Full introduction of halogen free environmental protection products
  • Apr. 2012
    Dongguan factory pass the IECQ QC080000 Approval
  • Jun. 2009
    TMOV Varistor obtained US patent
  • Apr. 2009
    Mass production of high energy SPD Disc
  • Mar. 2009
    Dongguan factory pass the OHSAS 18001:2007
  • Feb. 2009
    Environmental protection halogen free MOV trial production success
  • Dec. 2008
    The development of halogen-free MOV is completed
  • Nov. 2008
    Mass production of MOV for communication lightning protection
  • Oct. 2008
    Formulation development of Low Clamping Voltage type varistor completed
  • Apr. 2008
    Fire resistant varistor (MOV) development completed
  • Oct. 2006
    Development of overheat protection varistor completed
  • Jun. 2006
    Development of explosion proof MOV completed
  • Nov. 2005
    Successful development of surge protector B series
  • Oct. 2005
    Successful development of surge protector G Series
  • Mar. 2005
    Mass production of lead free environmentally friendly MOV
  • Nov. 2004
    Obtained ISO14001:2014 quality system certification.The SPDs (A series) has obtained a utility model patent in China
  • Apr. 2004
    Hold the first cross strait varistor Technology Seminar
  • Nov. 2003
    Obtain the patent right of US trademark
  • Sep. 2003
    The thermal cut-off protection type MOV has obtained a utility model patent in China
  • May 2003
    Obtain the patent right of Korean trademark
  • Nov. 2002
    The SPDs for Low voltage distribution system ( A series) obtained safety certification of China
  • Oct. 2002
    Hosted the annual meeting of China MOV society Obtained IECQ quality system certification
  • Jun. 2002
    MOV Obtained the CQC Quality Approval of China
  • May 2002
    Mass production of ceramic Gas Discharge Tubes(GDTs)
  • Oct. 2001
    The Surge Protective Devices (SPDs ) became into produce formally The Dongguan factory has obtained ISO 9000 quality system certification
  • Apr. 2001
    Shun Quan electrical Magerial (Dongguan) Co., Ltd. was established
  • Feb. 2000
    Production line of front to finish of MOV in Dongguan new factory
  • Mar. 1998
    MOV Obtained the Safety Approval of VDE
  • Sep. 1996
    Passed ISO9002 / IECQ quality system certification
  • Mar. 1995
    MOVs have obtained UL 1414 safety certification
  • Apr. 1994
    Low Voltage MOVs have obtained UL 1449 safety certification. Change the English name of the company to CeNtRa Science Corp.
  • Aug. 1993
    Medium & High Voltage MOVs have obtained UL 1449 safety certification
  • May 1992
    CNR was found
  • Aug. 2020
    Guangzhou Asia Pacific power and Technology Exhibition & introduction of new GDT / PPTC products
  • Jun. 2018
    China Great Wall and AOC qualified supplier
  • Mar. 2017
    High Surge H Series s electrical specifications improved
  • Mar. 2015
    New MOV products HE/Hot/C series Published
  • Dec. 2013
    Pass the TS 16949 International quality management system certification of automobile industry
  • May 2012
    20th anniversary of the establishment of the company /  Full introduction of halogen free environmental protection products
  • Apr. 2012
    Dongguan factory pass the IECQ QC080000 Approval
  • Jun. 2009
    TMOV Varistor obtained US patent
  • Apr. 2009
    Mass production of high energy SPD Disc
  • Mar. 2009
    Dongguan factory pass the OHSAS 18001:2007
  • Feb. 2009
    Environmental protection halogen free MOV trial production success
  • Dec. 2008
    The development of halogen-free MOV is completed
  • Nov. 2008
    Mass production of MOV for communication lightning protection
  • Oct. 2008
    Formulation development of Low Clamping Voltage type varistor completed
  • Apr. 2008
    Fire resistant varistor (MOV) development completed
  • Oct. 2006
    Development of overheat protection varistor completed
  • Jun. 2006
    Development of explosion proof MOV completed
  • Nov. 2005
    Successful development of surge protector B series
  • Oct. 2005
    Successful development of surge protector G Series
  • Mar. 2005
    Mass production of lead free environmentally friendly MOV
  • Nov. 2004
    Obtained ISO14001:2014 quality system certification.The SPDs (A series) has obtained a utility model patent in China
  • Apr. 2004
    Hold the first cross strait varistor Technology Seminar
  • Nov. 2003
    Obtain the patent right of US trademark
  • Sep. 2003
    The thermal cut-off protection type MOV has obtained a utility model patent in China
  • May 2003
    Obtain the patent right of Korean trademark
  • Nov. 2002
    The SPDs for Low voltage distribution system ( A series) obtained safety certification of China
  • Oct. 2002
    Hosted the annual meeting of China MOV society Obtained IECQ quality system certification
  • Jun. 2002
    MOV Obtained the CQC Quality Approval of China
  • May 2002
    Mass production of ceramic Gas Discharge Tubes(GDTs)
  • Oct. 2001
    The Surge Protective Devices (SPDs ) became into produce formally The Dongguan factory has obtained ISO 9000 quality system certification
  • Apr. 2001
    Shun Quan electrical Magerial (Dongguan) Co., Ltd. was established
  • Feb. 2000
    Production line of front to finish of MOV in Dongguan new factory
  • Mar. 1998
    MOV Obtained the Safety Approval of VDE
  • Sep. 1996
    Passed ISO9002 / IECQ quality system certification
  • Mar. 1995
    MOVs have obtained UL 1414 safety certification
  • Apr. 1994
    Low Voltage MOVs have obtained UL 1449 safety certification. Change the English name of the company to CeNtRa Science Corp.
  • Aug. 1993
    Medium & High Voltage MOVs have obtained UL 1449 safety certification
  • May 1992
    CNR was found
  • Aug. 2020
    Guangzhou Asia Pacific power and Technology Exhibition & introduction of new GDT / PPTC products
  • Jun. 2018
    China Great Wall and AOC qualified supplier
  • Mar. 2017
    High Surge H Series s electrical specifications improved
  • Mar. 2015
    New MOV products HE/Hot/C series Published
  • Dec. 2013
    Pass the TS 16949 International quality management system certification of automobile industry
  • May 2012
    20th anniversary of the establishment of the company /  Full introduction of halogen free environmental protection products
  • Apr. 2012
    Dongguan factory pass the IECQ QC080000 Approval
  • Jun. 2009
    TMOV Varistor obtained US patent
  • Apr. 2009
    Mass production of high energy SPD Disc
  • Mar. 2009
    Dongguan factory pass the OHSAS 18001:2007
  • Feb. 2009
    Environmental protection halogen free MOV trial production success
  • Dec. 2008
    The development of halogen-free MOV is completed
  • Nov. 2008
    Mass production of MOV for communication lightning protection
  • Oct. 2008
    Formulation development of Low Clamping Voltage type varistor completed
  • Apr. 2008
    Fire resistant varistor (MOV) development completed
  • Oct. 2006
    Development of overheat protection varistor completed
  • Jun. 2006
    Development of explosion proof MOV completed
  • Nov. 2005
    Successful development of surge protector B series
  • Oct. 2005
    Successful development of surge protector G Series
  • Mar. 2005
    Mass production of lead free environmentally friendly MOV
  • Nov. 2004
    Obtained ISO14001:2014 quality system certification.The SPDs (A series) has obtained a utility model patent in China
  • Apr. 2004
    Hold the first cross strait varistor Technology Seminar
  • Nov. 2003
    Obtain the patent right of US trademark
  • Sep. 2003
    The thermal cut-off protection type MOV has obtained a utility model patent in China
  • May 2003
    Obtain the patent right of Korean trademark
  • Nov. 2002
    The SPDs for Low voltage distribution system ( A series) obtained safety certification of China
  • Oct. 2002
    Hosted the annual meeting of China MOV society Obtained IECQ quality system certification
  • Jun. 2002
    MOV Obtained the CQC Quality Approval of China
  • May 2002
    Mass production of ceramic Gas Discharge Tubes(GDTs)
  • Oct. 2001
    The Surge Protective Devices (SPDs ) became into produce formally The Dongguan factory has obtained ISO 9000 quality system certification
  • Apr. 2001
    Shun Quan electrical Magerial (Dongguan) Co., Ltd. was established
  • Feb. 2000
    Production line of front to finish of MOV in Dongguan new factory
  • Mar. 1998
    MOV Obtained the Safety Approval of VDE
  • Sep. 1996
    Passed ISO9002 / IECQ quality system certification
  • Mar. 1995
    MOVs have obtained UL 1414 safety certification
  • Apr. 1994
    Low Voltage MOVs have obtained UL 1449 safety certification. Change the English name of the company to CeNtRa Science Corp.
  • Aug. 1993
    Medium & High Voltage MOVs have obtained UL 1449 safety certification
  • May 1992
    CNR was found
  • Aug. 2020
    Guangzhou Asia Pacific power and Technology Exhibition & introduction of new GDT / PPTC products
  • Jun. 2018
    China Great Wall and AOC qualified supplier
  • Mar. 2017
    High Surge H Series s electrical specifications improved
  • Mar. 2015
    New MOV products HE/Hot/C series Published
  • Dec. 2013
    Pass the TS 16949 International quality management system certification of automobile industry
  • May 2012
    20th anniversary of the establishment of the company /  Full introduction of halogen free environmental protection products
  • Apr. 2012
    Dongguan factory pass the IECQ QC080000 Approval
  • Jun. 2009
    TMOV Varistor obtained US patent
  • Apr. 2009
    Mass production of high energy SPD Disc
  • Mar. 2009
    Dongguan factory pass the OHSAS 18001:2007
  • Feb. 2009
    Environmental protection halogen free MOV trial production success
  • Dec. 2008
    The development of halogen-free MOV is completed
  • Nov. 2008
    Mass production of MOV for communication lightning protection
  • Oct. 2008
    Formulation development of Low Clamping Voltage type varistor completed
  • Apr. 2008
    Fire resistant varistor (MOV) development completed
  • Oct. 2006
    Development of overheat protection varistor completed
  • Jun. 2006
    Development of explosion proof MOV completed
  • Nov. 2005
    Successful development of surge protector B series
  • Oct. 2005
    Successful development of surge protector G Series
  • Mar. 2005
    Mass production of lead free environmentally friendly MOV
  • Nov. 2004
    Obtained ISO14001:2014 quality system certification.The SPDs (A series) has obtained a utility model patent in China
  • Apr. 2004
    Hold the first cross strait varistor Technology Seminar
  • Nov. 2003
    Obtain the patent right of US trademark
  • Sep. 2003
    The thermal cut-off protection type MOV has obtained a utility model patent in China
  • May 2003
    Obtain the patent right of Korean trademark
  • Nov. 2002
    The SPDs for Low voltage distribution system ( A series) obtained safety certification of China
  • Oct. 2002
    Hosted the annual meeting of China MOV society Obtained IECQ quality system certification
  • Jun. 2002
    MOV Obtained the CQC Quality Approval of China
  • May 2002
    Mass production of ceramic Gas Discharge Tubes(GDTs)
  • Oct. 2001
    The Surge Protective Devices (SPDs ) became into produce formally The Dongguan factory has obtained ISO 9000 quality system certification
  • Apr. 2001
    Shun Quan electrical Magerial (Dongguan) Co., Ltd. was established
  • Feb. 2000
    Production line of front to finish of MOV in Dongguan new factory
  • Mar. 1998
    MOV Obtained the Safety Approval of VDE
  • Sep. 1996
    Passed ISO9002 / IECQ quality system certification
  • Mar. 1995
    MOVs have obtained UL 1414 safety certification
  • Apr. 1994
    Low Voltage MOVs have obtained UL 1449 safety certification. Change the English name of the company to CeNtRa Science Corp.
  • Aug. 1993
    Medium & High Voltage MOVs have obtained UL 1449 safety certification
  • May 1992
    CNR was found
  • Aug. 2020
    Guangzhou Asia Pacific power and Technology Exhibition & introduction of new GDT / PPTC products
  • Jun. 2018
    China Great Wall and AOC qualified supplier
  • Mar. 2017
    High Surge H Series s electrical specifications improved
  • Mar. 2015
    New MOV products HE/Hot/C series Published
  • Dec. 2013
    Pass the TS 16949 International quality management system certification of automobile industry
  • May 2012
    20th anniversary of the establishment of the company /  Full introduction of halogen free environmental protection products
  • Apr. 2012
    Dongguan factory pass the IECQ QC080000 Approval
  • Jun. 2009
    TMOV Varistor obtained US patent
  • Apr. 2009
    Mass production of high energy SPD Disc
  • Mar. 2009
    Dongguan factory pass the OHSAS 18001:2007
  • Feb. 2009
    Environmental protection halogen free MOV trial production success
  • Dec. 2008
    The development of halogen-free MOV is completed
  • Nov. 2008
    Mass production of MOV for communication lightning protection
  • Oct. 2008
    Formulation development of Low Clamping Voltage type varistor completed
  • Apr. 2008
    Fire resistant varistor (MOV) development completed
  • Oct. 2006
    Development of overheat protection varistor completed
  • Jun. 2006
    Development of explosion proof MOV completed
  • Nov. 2005
    Successful development of surge protector B series
  • Oct. 2005
    Successful development of surge protector G Series
  • Mar. 2005
    Mass production of lead free environmentally friendly MOV
  • Nov. 2004
    Obtained ISO14001:2014 quality system certification.The SPDs (A series) has obtained a utility model patent in China
  • Apr. 2004
    Hold the first cross strait varistor Technology Seminar
  • Nov. 2003
    Obtain the patent right of US trademark
  • Sep. 2003
    The thermal cut-off protection type MOV has obtained a utility model patent in China
  • May 2003
    Obtain the patent right of Korean trademark
  • Nov. 2002
    The SPDs for Low voltage distribution system ( A series) obtained safety certification of China
  • Oct. 2002
    Hosted the annual meeting of China MOV society Obtained IECQ quality system certification
  • Jun. 2002
    MOV Obtained the CQC Quality Approval of China
  • May 2002
    Mass production of ceramic Gas Discharge Tubes(GDTs)
  • Oct. 2001
    The Surge Protective Devices (SPDs ) became into produce formally The Dongguan factory has obtained ISO 9000 quality system certification
  • Apr. 2001
    Shun Quan electrical Magerial (Dongguan) Co., Ltd. was established
  • Feb. 2000
    Production line of front to finish of MOV in Dongguan new factory
  • Mar. 1998
    MOV Obtained the Safety Approval of VDE
  • Sep. 1996
    Passed ISO9002 / IECQ quality system certification
  • Mar. 1995
    MOVs have obtained UL 1414 safety certification
  • Apr. 1994
    Low Voltage MOVs have obtained UL 1449 safety certification. Change the English name of the company to CeNtRa Science Corp.
  • Aug. 1993
    Medium & High Voltage MOVs have obtained UL 1449 safety certification
  • May 1992
    CNR was found
  • Aug. 2020
    Guangzhou Asia Pacific power and Technology Exhibition & introduction of new GDT / PPTC products
  • Jun. 2018
    China Great Wall and AOC qualified supplier
  • Mar. 2017
    High Surge H Series s electrical specifications improved
  • Mar. 2015
    New MOV products HE/Hot/C series Published
  • Dec. 2013
    Pass the TS 16949 International quality management system certification of automobile industry
  • May 2012
    20th anniversary of the establishment of the company /  Full introduction of halogen free environmental protection products
  • Apr. 2012
    Dongguan factory pass the IECQ QC080000 Approval
  • Jun. 2009
    TMOV Varistor obtained US patent
  • Apr. 2009
    Mass production of high energy SPD Disc
  • Mar. 2009
    Dongguan factory pass the OHSAS 18001:2007
  • Feb. 2009
    Environmental protection halogen free MOV trial production success
  • Dec. 2008
    The development of halogen-free MOV is completed
  • Nov. 2008
    Mass production of MOV for communication lightning protection
  • Oct. 2008
    Formulation development of Low Clamping Voltage type varistor completed
  • Apr. 2008
    Fire resistant varistor (MOV) development completed
  • Oct. 2006
    Development of overheat protection varistor completed
  • Jun. 2006
    Development of explosion proof MOV completed
  • Nov. 2005
    Successful development of surge protector B series
  • Oct. 2005
    Successful development of surge protector G Series
  • Mar. 2005
    Mass production of lead free environmentally friendly MOV
  • Nov. 2004
    Obtained ISO14001:2014 quality system certification.The SPDs (A series) has obtained a utility model patent in China
  • Apr. 2004
    Hold the first cross strait varistor Technology Seminar
  • Nov. 2003
    Obtain the patent right of US trademark
  • Sep. 2003
    The thermal cut-off protection type MOV has obtained a utility model patent in China
  • May 2003
    Obtain the patent right of Korean trademark
  • Nov. 2002
    The SPDs for Low voltage distribution system ( A series) obtained safety certification of China
  • Oct. 2002
    Hosted the annual meeting of China MOV society Obtained IECQ quality system certification
  • Jun. 2002
    MOV Obtained the CQC Quality Approval of China
  • May 2002
    Mass production of ceramic Gas Discharge Tubes(GDTs)
  • Oct. 2001
    The Surge Protective Devices (SPDs ) became into produce formally The Dongguan factory has obtained ISO 9000 quality system certification
  • Apr. 2001
    Shun Quan electrical Magerial (Dongguan) Co., Ltd. was established
  • Feb. 2000
    Production line of front to finish of MOV in Dongguan new factory
  • Mar. 1998
    MOV Obtained the Safety Approval of VDE
  • Sep. 1996
    Passed ISO9002 / IECQ quality system certification
  • Mar. 1995
    MOVs have obtained UL 1414 safety certification
  • Apr. 1994
    Low Voltage MOVs have obtained UL 1449 safety certification. Change the English name of the company to CeNtRa Science Corp.
  • Aug. 1993
    Medium & High Voltage MOVs have obtained UL 1449 safety certification
  • May 1992
    CNR was found
  • Aug. 2020
    Guangzhou Asia Pacific power and Technology Exhibition & introduction of new GDT / PPTC products
  • Jun. 2018
    China Great Wall and AOC qualified supplier
  • Mar. 2017
    High Surge H Series s electrical specifications improved
  • Mar. 2015
    New MOV products HE/Hot/C series Published
  • Dec. 2013
    Pass the TS 16949 International quality management system certification of automobile industry
  • May 2012
    20th anniversary of the establishment of the company /  Full introduction of halogen free environmental protection products
  • Apr. 2012
    Dongguan factory pass the IECQ QC080000 Approval
  • Jun. 2009
    TMOV Varistor obtained US patent
  • Apr. 2009
    Mass production of high energy SPD Disc
  • Mar. 2009
    Dongguan factory pass the OHSAS 18001:2007
  • Feb. 2009
    Environmental protection halogen free MOV trial production success
  • Dec. 2008
    The development of halogen-free MOV is completed
  • Nov. 2008
    Mass production of MOV for communication lightning protection
  • Oct. 2008
    Formulation development of Low Clamping Voltage type varistor completed
  • Apr. 2008
    Fire resistant varistor (MOV) development completed
  • Oct. 2006
    Development of overheat protection varistor completed
  • Jun. 2006
    Development of explosion proof MOV completed
  • Nov. 2005
    Successful development of surge protector B series
  • Oct. 2005
    Successful development of surge protector G Series
  • Mar. 2005
    Mass production of lead free environmentally friendly MOV
  • Nov. 2004
    Obtained ISO14001:2014 quality system certification.The SPDs (A series) has obtained a utility model patent in China
  • Apr. 2004
    Hold the first cross strait varistor Technology Seminar
  • Nov. 2003
    Obtain the patent right of US trademark
  • Sep. 2003
    The thermal cut-off protection type MOV has obtained a utility model patent in China
  • May 2003
    Obtain the patent right of Korean trademark
  • Nov. 2002
    The SPDs for Low voltage distribution system ( A series) obtained safety certification of China
  • Oct. 2002
    Hosted the annual meeting of China MOV society Obtained IECQ quality system certification
  • Jun. 2002
    MOV Obtained the CQC Quality Approval of China
  • May 2002
    Mass production of ceramic Gas Discharge Tubes(GDTs)
  • Oct. 2001
    The Surge Protective Devices (SPDs ) became into produce formally The Dongguan factory has obtained ISO 9000 quality system certification
  • Apr. 2001
    Shun Quan electrical Magerial (Dongguan) Co., Ltd. was established
  • Feb. 2000
    Production line of front to finish of MOV in Dongguan new factory
  • Mar. 1998
    MOV Obtained the Safety Approval of VDE
  • Sep. 1996
    Passed ISO9002 / IECQ quality system certification
  • Mar. 1995
    MOVs have obtained UL 1414 safety certification
  • Apr. 1994
    Low Voltage MOVs have obtained UL 1449 safety certification. Change the English name of the company to CeNtRa Science Corp.
  • Aug. 1993
    Medium & High Voltage MOVs have obtained UL 1449 safety certification
  • May 1992
    CNR was found
  • Aug. 2020
    Guangzhou Asia Pacific power and Technology Exhibition & introduction of new GDT / PPTC products
  • Jun. 2018
    China Great Wall and AOC qualified supplier
  • Mar. 2017
    High Surge H Series s electrical specifications improved
  • Mar. 2015
    New MOV products HE/Hot/C series Published
  • Dec. 2013
    Pass the TS 16949 International quality management system certification of automobile industry
  • May 2012
    20th anniversary of the establishment of the company /  Full introduction of halogen free environmental protection products
  • Apr. 2012
    Dongguan factory pass the IECQ QC080000 Approval
  • Jun. 2009
    TMOV Varistor obtained US patent
  • Apr. 2009
    Mass production of high energy SPD Disc
  • Mar. 2009
    Dongguan factory pass the OHSAS 18001:2007
  • Feb. 2009
    Environmental protection halogen free MOV trial production success
  • Dec. 2008
    The development of halogen-free MOV is completed
  • Nov. 2008
    Mass production of MOV for communication lightning protection
  • Oct. 2008
    Formulation development of Low Clamping Voltage type varistor completed
  • Apr. 2008
    Fire resistant varistor (MOV) development completed
  • Oct. 2006
    Development of overheat protection varistor completed
  • Jun. 2006
    Development of explosion proof MOV completed
  • Nov. 2005
    Successful development of surge protector B series
  • Oct. 2005
    Successful development of surge protector G Series
  • Mar. 2005
    Mass production of lead free environmentally friendly MOV
  • Nov. 2004
    Obtained ISO14001:2014 quality system certification.The SPDs (A series) has obtained a utility model patent in China
  • Apr. 2004
    Hold the first cross strait varistor Technology Seminar
  • Nov. 2003
    Obtain the patent right of US trademark
  • Sep. 2003
    The thermal cut-off protection type MOV has obtained a utility model patent in China
  • May 2003
    Obtain the patent right of Korean trademark
  • Nov. 2002
    The SPDs for Low voltage distribution system ( A series) obtained safety certification of China
  • Oct. 2002
    Hosted the annual meeting of China MOV society Obtained IECQ quality system certification
  • Jun. 2002
    MOV Obtained the CQC Quality Approval of China
  • May 2002
    Mass production of ceramic Gas Discharge Tubes(GDTs)
  • Oct. 2001
    The Surge Protective Devices (SPDs ) became into produce formally The Dongguan factory has obtained ISO 9000 quality system certification
  • Apr. 2001
    Shun Quan electrical Magerial (Dongguan) Co., Ltd. was established
  • Feb. 2000
    Production line of front to finish of MOV in Dongguan new factory
  • Mar. 1998
    MOV Obtained the Safety Approval of VDE
  • Sep. 1996
    Passed ISO9002 / IECQ quality system certification
  • Mar. 1995
    MOVs have obtained UL 1414 safety certification
  • Apr. 1994
    Low Voltage MOVs have obtained UL 1449 safety certification. Change the English name of the company to CeNtRa Science Corp.
  • Aug. 1993
    Medium & High Voltage MOVs have obtained UL 1449 safety certification
  • May 1992
    CNR was found
  • Aug. 2020
    Guangzhou Asia Pacific power and Technology Exhibition & introduction of new GDT / PPTC products
  • Jun. 2018
    China Great Wall and AOC qualified supplier
  • Mar. 2017
    High Surge H Series s electrical specifications improved
  • Mar. 2015
    New MOV products HE/Hot/C series Published
  • Dec. 2013
    Pass the TS 16949 International quality management system certification of automobile industry
  • May 2012
    20th anniversary of the establishment of the company /  Full introduction of halogen free environmental protection products
  • Apr. 2012
    Dongguan factory pass the IECQ QC080000 Approval
  • Jun. 2009
    TMOV Varistor obtained US patent
  • Apr. 2009
    Mass production of high energy SPD Disc
  • Mar. 2009
    Dongguan factory pass the OHSAS 18001:2007
  • Feb. 2009
    Environmental protection halogen free MOV trial production success
  • Dec. 2008
    The development of halogen-free MOV is completed
  • Nov. 2008
    Mass production of MOV for communication lightning protection
  • Oct. 2008
    Formulation development of Low Clamping Voltage type varistor completed
  • Apr. 2008
    Fire resistant varistor (MOV) development completed
  • Oct. 2006
    Development of overheat protection varistor completed
  • Jun. 2006
    Development of explosion proof MOV completed
  • Nov. 2005
    Successful development of surge protector B series
  • Oct. 2005
    Successful development of surge protector G Series
  • Mar. 2005
    Mass production of lead free environmentally friendly MOV
  • Nov. 2004
    Obtained ISO14001:2014 quality system certification.The SPDs (A series) has obtained a utility model patent in China
  • Apr. 2004
    Hold the first cross strait varistor Technology Seminar
  • Nov. 2003
    Obtain the patent right of US trademark
  • Sep. 2003
    The thermal cut-off protection type MOV has obtained a utility model patent in China
  • May 2003
    Obtain the patent right of Korean trademark
  • Nov. 2002
    The SPDs for Low voltage distribution system ( A series) obtained safety certification of China
  • Oct. 2002
    Hosted the annual meeting of China MOV society Obtained IECQ quality system certification
  • Jun. 2002
    MOV Obtained the CQC Quality Approval of China
  • May 2002
    Mass production of ceramic Gas Discharge Tubes(GDTs)
  • Oct. 2001
    The Surge Protective Devices (SPDs ) became into produce formally The Dongguan factory has obtained ISO 9000 quality system certification
  • Apr. 2001
    Shun Quan electrical Magerial (Dongguan) Co., Ltd. was established
  • Feb. 2000
    Production line of front to finish of MOV in Dongguan new factory
  • Mar. 1998
    MOV Obtained the Safety Approval of VDE
  • Sep. 1996
    Passed ISO9002 / IECQ quality system certification
  • Mar. 1995
    MOVs have obtained UL 1414 safety certification
  • Apr. 1994
    Low Voltage MOVs have obtained UL 1449 safety certification. Change the English name of the company to CeNtRa Science Corp.
  • Aug. 1993
    Medium & High Voltage MOVs have obtained UL 1449 safety certification
  • May 1992
    CNR was found
  • Aug. 2020
    Guangzhou Asia Pacific power and Technology Exhibition & introduction of new GDT / PPTC products
  • Jun. 2018
    China Great Wall and AOC qualified supplier
  • Mar. 2017
    High Surge H Series s electrical specifications improved
  • Mar. 2015
    New MOV products HE/Hot/C series Published
  • Dec. 2013
    Pass the TS 16949 International quality management system certification of automobile industry
  • May 2012
    20th anniversary of the establishment of the company /  Full introduction of halogen free environmental protection products
  • Apr. 2012
    Dongguan factory pass the IECQ QC080000 Approval
  • Jun. 2009
    TMOV Varistor obtained US patent
  • Apr. 2009
    Mass production of high energy SPD Disc
  • Mar. 2009
    Dongguan factory pass the OHSAS 18001:2007
  • Feb. 2009
    Environmental protection halogen free MOV trial production success
  • Dec. 2008
    The development of halogen-free MOV is completed
  • Nov. 2008
    Mass production of MOV for communication lightning protection
  • Oct. 2008
    Formulation development of Low Clamping Voltage type varistor completed
  • Apr. 2008
    Fire resistant varistor (MOV) development completed
  • Oct. 2006
    Development of overheat protection varistor completed
  • Jun. 2006
    Development of explosion proof MOV completed
  • Nov. 2005
    Successful development of surge protector B series
  • Oct. 2005
    Successful development of surge protector G Series
  • Mar. 2005
    Mass production of lead free environmentally friendly MOV
  • Nov. 2004
    Obtained ISO14001:2014 quality system certification.The SPDs (A series) has obtained a utility model patent in China
  • Apr. 2004
    Hold the first cross strait varistor Technology Seminar
  • Nov. 2003
    Obtain the patent right of US trademark
  • Sep. 2003
    The thermal cut-off protection type MOV has obtained a utility model patent in China
  • May 2003
    Obtain the patent right of Korean trademark
  • Nov. 2002
    The SPDs for Low voltage distribution system ( A series) obtained safety certification of China
  • Oct. 2002
    Hosted the annual meeting of China MOV society Obtained IECQ quality system certification
  • Jun. 2002
    MOV Obtained the CQC Quality Approval of China
  • May 2002
    Mass production of ceramic Gas Discharge Tubes(GDTs)
  • Oct. 2001
    The Surge Protective Devices (SPDs ) became into produce formally The Dongguan factory has obtained ISO 9000 quality system certification
  • Apr. 2001
    Shun Quan electrical Magerial (Dongguan) Co., Ltd. was established
  • Feb. 2000
    Production line of front to finish of MOV in Dongguan new factory
  • Mar. 1998
    MOV Obtained the Safety Approval of VDE
  • Sep. 1996
    Passed ISO9002 / IECQ quality system certification
  • Mar. 1995
    MOVs have obtained UL 1414 safety certification
  • Apr. 1994
    Low Voltage MOVs have obtained UL 1449 safety certification. Change the English name of the company to CeNtRa Science Corp.
  • Aug. 1993
    Medium & High Voltage MOVs have obtained UL 1449 safety certification
  • May 1992
    CNR was found
  • Aug. 2020
    Guangzhou Asia Pacific power and Technology Exhibition & introduction of new GDT / PPTC products
  • Jun. 2018
    China Great Wall and AOC qualified supplier
  • Mar. 2017
    High Surge H Series s electrical specifications improved
  • Mar. 2015
    New MOV products HE/Hot/C series Published
  • Dec. 2013
    Pass the TS 16949 International quality management system certification of automobile industry
  • May 2012
    20th anniversary of the establishment of the company /  Full introduction of halogen free environmental protection products
  • Apr. 2012
    Dongguan factory pass the IECQ QC080000 Approval
  • Jun. 2009
    TMOV Varistor obtained US patent
  • Apr. 2009
    Mass production of high energy SPD Disc
  • Mar. 2009
    Dongguan factory pass the OHSAS 18001:2007
  • Feb. 2009
    Environmental protection halogen free MOV trial production success
  • Dec. 2008
    The development of halogen-free MOV is completed
  • Nov. 2008
    Mass production of MOV for communication lightning protection
  • Oct. 2008
    Formulation development of Low Clamping Voltage type varistor completed
  • Apr. 2008
    Fire resistant varistor (MOV) development completed
  • Oct. 2006
    Development of overheat protection varistor completed
  • Jun. 2006
    Development of explosion proof MOV completed
  • Nov. 2005
    Successful development of surge protector B series
  • Oct. 2005
    Successful development of surge protector G Series
  • Mar. 2005
    Mass production of lead free environmentally friendly MOV
  • Nov. 2004
    Obtained ISO14001:2014 quality system certification.The SPDs (A series) has obtained a utility model patent in China
  • Apr. 2004
    Hold the first cross strait varistor Technology Seminar
  • Nov. 2003
    Obtain the patent right of US trademark
  • Sep. 2003
    The thermal cut-off protection type MOV has obtained a utility model patent in China
  • May 2003
    Obtain the patent right of Korean trademark
  • Nov. 2002
    The SPDs for Low voltage distribution system ( A series) obtained safety certification of China
  • Oct. 2002
    Hosted the annual meeting of China MOV society Obtained IECQ quality system certification
  • Jun. 2002
    MOV Obtained the CQC Quality Approval of China
  • May 2002
    Mass production of ceramic Gas Discharge Tubes(GDTs)
  • Oct. 2001
    The Surge Protective Devices (SPDs ) became into produce formally The Dongguan factory has obtained ISO 9000 quality system certification
  • Apr. 2001
    Shun Quan electrical Magerial (Dongguan) Co., Ltd. was established
  • Feb. 2000
    Production line of front to finish of MOV in Dongguan new factory
  • Mar. 1998
    MOV Obtained the Safety Approval of VDE
  • Sep. 1996
    Passed ISO9002 / IECQ quality system certification
  • Mar. 1995
    MOVs have obtained UL 1414 safety certification
  • Apr. 1994
    Low Voltage MOVs have obtained UL 1449 safety certification. Change the English name of the company to CeNtRa Science Corp.
  • Aug. 1993
    Medium & High Voltage MOVs have obtained UL 1449 safety certification
  • May 1992
    CNR was found
  • Aug. 2020
    Guangzhou Asia Pacific power and Technology Exhibition & introduction of new GDT / PPTC products
  • Jun. 2018
    China Great Wall and AOC qualified supplier
  • Mar. 2017
    High Surge H Series s electrical specifications improved
  • Mar. 2015
    New MOV products HE/Hot/C series Published
  • Dec. 2013
    Pass the TS 16949 International quality management system certification of automobile industry
  • May 2012
    20th anniversary of the establishment of the company /  Full introduction of halogen free environmental protection products
  • Apr. 2012
    Dongguan factory pass the IECQ QC080000 Approval
  • Jun. 2009
    TMOV Varistor obtained US patent
  • Apr. 2009
    Mass production of high energy SPD Disc
  • Mar. 2009
    Dongguan factory pass the OHSAS 18001:2007
  • Feb. 2009
    Environmental protection halogen free MOV trial production success
  • Dec. 2008
    The development of halogen-free MOV is completed
  • Nov. 2008
    Mass production of MOV for communication lightning protection
  • Oct. 2008
    Formulation development of Low Clamping Voltage type varistor completed
  • Apr. 2008
    Fire resistant varistor (MOV) development completed
  • Oct. 2006
    Development of overheat protection varistor completed
  • Jun. 2006
    Development of explosion proof MOV completed
  • Nov. 2005
    Successful development of surge protector B series
  • Oct. 2005
    Successful development of surge protector G Series
  • Mar. 2005
    Mass production of lead free environmentally friendly MOV
  • Nov. 2004
    Obtained ISO14001:2014 quality system certification.The SPDs (A series) has obtained a utility model patent in China
  • Apr. 2004
    Hold the first cross strait varistor Technology Seminar
  • Nov. 2003
    Obtain the patent right of US trademark
  • Sep. 2003
    The thermal cut-off protection type MOV has obtained a utility model patent in China
  • May 2003
    Obtain the patent right of Korean trademark
  • Nov. 2002
    The SPDs for Low voltage distribution system ( A series) obtained safety certification of China
  • Oct. 2002
    Hosted the annual meeting of China MOV society Obtained IECQ quality system certification
  • Jun. 2002
    MOV Obtained the CQC Quality Approval of China
  • May 2002
    Mass production of ceramic Gas Discharge Tubes(GDTs)
  • Oct. 2001
    The Surge Protective Devices (SPDs ) became into produce formally The Dongguan factory has obtained ISO 9000 quality system certification
  • Apr. 2001
    Shun Quan electrical Magerial (Dongguan) Co., Ltd. was established
  • Feb. 2000
    Production line of front to finish of MOV in Dongguan new factory
  • Mar. 1998
    MOV Obtained the Safety Approval of VDE
  • Sep. 1996
    Passed ISO9002 / IECQ quality system certification
  • Mar. 1995
    MOVs have obtained UL 1414 safety certification
  • Apr. 1994
    Low Voltage MOVs have obtained UL 1449 safety certification. Change the English name of the company to CeNtRa Science Corp.
  • Aug. 1993
    Medium & High Voltage MOVs have obtained UL 1449 safety certification
  • May 1992
    CNR was found
  • Aug. 2020
    Guangzhou Asia Pacific power and Technology Exhibition & introduction of new GDT / PPTC products
  • Jun. 2018
    China Great Wall and AOC qualified supplier
  • Mar. 2017
    High Surge H Series s electrical specifications improved
  • Mar. 2015
    New MOV products HE/Hot/C series Published
  • Dec. 2013
    Pass the TS 16949 International quality management system certification of automobile industry
  • May 2012
    20th anniversary of the establishment of the company /  Full introduction of halogen free environmental protection products
  • Apr. 2012
    Dongguan factory pass the IECQ QC080000 Approval
  • Jun. 2009
    TMOV Varistor obtained US patent
  • Apr. 2009
    Mass production of high energy SPD Disc
  • Mar. 2009
    Dongguan factory pass the OHSAS 18001:2007
  • Feb. 2009
    Environmental protection halogen free MOV trial production success
  • Dec. 2008
    The development of halogen-free MOV is completed
  • Nov. 2008
    Mass production of MOV for communication lightning protection
  • Oct. 2008
    Formulation development of Low Clamping Voltage type varistor completed
  • Apr. 2008
    Fire resistant varistor (MOV) development completed
  • Oct. 2006
    Development of overheat protection varistor completed
  • Jun. 2006
    Development of explosion proof MOV completed
  • Nov. 2005
    Successful development of surge protector B series
  • Oct. 2005
    Successful development of surge protector G Series
  • Mar. 2005
    Mass production of lead free environmentally friendly MOV
  • Nov. 2004
    Obtained ISO14001:2014 quality system certification.The SPDs (A series) has obtained a utility model patent in China
  • Apr. 2004
    Hold the first cross strait varistor Technology Seminar
  • Nov. 2003
    Obtain the patent right of US trademark
  • Sep. 2003
    The thermal cut-off protection type MOV has obtained a utility model patent in China
  • May 2003
    Obtain the patent right of Korean trademark
  • Nov. 2002
    The SPDs for Low voltage distribution system ( A series) obtained safety certification of China
  • Oct. 2002
    Hosted the annual meeting of China MOV society Obtained IECQ quality system certification
  • Jun. 2002
    MOV Obtained the CQC Quality Approval of China
  • May 2002
    Mass production of ceramic Gas Discharge Tubes(GDTs)
  • Oct. 2001
    The Surge Protective Devices (SPDs ) became into produce formally The Dongguan factory has obtained ISO 9000 quality system certification
  • Apr. 2001
    Shun Quan electrical Magerial (Dongguan) Co., Ltd. was established
  • Feb. 2000
    Production line of front to finish of MOV in Dongguan new factory
  • Mar. 1998
    MOV Obtained the Safety Approval of VDE
  • Sep. 1996
    Passed ISO9002 / IECQ quality system certification
  • Mar. 1995
    MOVs have obtained UL 1414 safety certification
  • Apr. 1994
    Low Voltage MOVs have obtained UL 1449 safety certification. Change the English name of the company to CeNtRa Science Corp.
  • Aug. 1993
    Medium & High Voltage MOVs have obtained UL 1449 safety certification
  • May 1992
    CNR was found
  • Aug. 2020
    Guangzhou Asia Pacific power and Technology Exhibition & introduction of new GDT / PPTC products
  • Jun. 2018
    China Great Wall and AOC qualified supplier
  • Mar. 2017
    High Surge H Series s electrical specifications improved
  • Mar. 2015
    New MOV products HE/Hot/C series Published
  • Dec. 2013
    Pass the TS 16949 International quality management system certification of automobile industry
  • May 2012
    20th anniversary of the establishment of the company /  Full introduction of halogen free environmental protection products
  • Apr. 2012
    Dongguan factory pass the IECQ QC080000 Approval
  • Jun. 2009
    TMOV Varistor obtained US patent
  • Apr. 2009
    Mass production of high energy SPD Disc
  • Mar. 2009
    Dongguan factory pass the OHSAS 18001:2007
  • Feb. 2009
    Environmental protection halogen free MOV trial production success
  • Dec. 2008
    The development of halogen-free MOV is completed
  • Nov. 2008
    Mass production of MOV for communication lightning protection
  • Oct. 2008
    Formulation development of Low Clamping Voltage type varistor completed
  • Apr. 2008
    Fire resistant varistor (MOV) development completed
  • Oct. 2006
    Development of overheat protection varistor completed
  • Jun. 2006
    Development of explosion proof MOV completed
  • Nov. 2005
    Successful development of surge protector B series
  • Oct. 2005
    Successful development of surge protector G Series
  • Mar. 2005
    Mass production of lead free environmentally friendly MOV
  • Nov. 2004
    Obtained ISO14001:2014 quality system certification.The SPDs (A series) has obtained a utility model patent in China
  • Apr. 2004
    Hold the first cross strait varistor Technology Seminar
  • Nov. 2003
    Obtain the patent right of US trademark
  • Sep. 2003
    The thermal cut-off protection type MOV has obtained a utility model patent in China
  • May 2003
    Obtain the patent right of Korean trademark
  • Nov. 2002
    The SPDs for Low voltage distribution system ( A series) obtained safety certification of China
  • Oct. 2002
    Hosted the annual meeting of China MOV society Obtained IECQ quality system certification
  • Jun. 2002
    MOV Obtained the CQC Quality Approval of China
  • May 2002
    Mass production of ceramic Gas Discharge Tubes(GDTs)
  • Oct. 2001
    The Surge Protective Devices (SPDs ) became into produce formally The Dongguan factory has obtained ISO 9000 quality system certification
  • Apr. 2001
    Shun Quan electrical Magerial (Dongguan) Co., Ltd. was established
  • Feb. 2000
    Production line of front to finish of MOV in Dongguan new factory
  • Mar. 1998
    MOV Obtained the Safety Approval of VDE
  • Sep. 1996
    Passed ISO9002 / IECQ quality system certification
  • Mar. 1995
    MOVs have obtained UL 1414 safety certification
  • Apr. 1994
    Low Voltage MOVs have obtained UL 1449 safety certification. Change the English name of the company to CeNtRa Science Corp.
  • Aug. 1993
    Medium & High Voltage MOVs have obtained UL 1449 safety certification
  • May 1992
    CNR was found
  • Aug. 2020
    Guangzhou Asia Pacific power and Technology Exhibition & introduction of new GDT / PPTC products
  • Jun. 2018
    China Great Wall and AOC qualified supplier
  • Mar. 2017
    High Surge H Series s electrical specifications improved
  • Mar. 2015
    New MOV products HE/Hot/C series Published
  • Dec. 2013
    Pass the TS 16949 International quality management system certification of automobile industry
  • May 2012
    20th anniversary of the establishment of the company /  Full introduction of halogen free environmental protection products
  • Apr. 2012
    Dongguan factory pass the IECQ QC080000 Approval
  • Jun. 2009
    TMOV Varistor obtained US patent
  • Apr. 2009
    Mass production of high energy SPD Disc
  • Mar. 2009
    Dongguan factory pass the OHSAS 18001:2007
  • Feb. 2009
    Environmental protection halogen free MOV trial production success
  • Dec. 2008
    The development of halogen-free MOV is completed
  • Nov. 2008
    Mass production of MOV for communication lightning protection
  • Oct. 2008
    Formulation development of Low Clamping Voltage type varistor completed
  • Apr. 2008
    Fire resistant varistor (MOV) development completed
  • Oct. 2006
    Development of overheat protection varistor completed
  • Jun. 2006
    Development of explosion proof MOV completed
  • Nov. 2005
    Successful development of surge protector B series
  • Oct. 2005
    Successful development of surge protector G Series
  • Mar. 2005
    Mass production of lead free environmentally friendly MOV
  • Nov. 2004
    Obtained ISO14001:2014 quality system certification.The SPDs (A series) has obtained a utility model patent in China
  • Apr. 2004
    Hold the first cross strait varistor Technology Seminar
  • Nov. 2003
    Obtain the patent right of US trademark
  • Sep. 2003
    The thermal cut-off protection type MOV has obtained a utility model patent in China
  • May 2003
    Obtain the patent right of Korean trademark
  • Nov. 2002
    The SPDs for Low voltage distribution system ( A series) obtained safety certification of China
  • Oct. 2002
    Hosted the annual meeting of China MOV society Obtained IECQ quality system certification
  • Jun. 2002
    MOV Obtained the CQC Quality Approval of China
  • May 2002
    Mass production of ceramic Gas Discharge Tubes(GDTs)
  • Oct. 2001
    The Surge Protective Devices (SPDs ) became into produce formally The Dongguan factory has obtained ISO 9000 quality system certification
  • Apr. 2001
    Shun Quan electrical Magerial (Dongguan) Co., Ltd. was established
  • Feb. 2000
    Production line of front to finish of MOV in Dongguan new factory
  • Mar. 1998
    MOV Obtained the Safety Approval of VDE
  • Sep. 1996
    Passed ISO9002 / IECQ quality system certification
  • Mar. 1995
    MOVs have obtained UL 1414 safety certification
  • Apr. 1994
    Low Voltage MOVs have obtained UL 1449 safety certification. Change the English name of the company to CeNtRa Science Corp.
  • Aug. 1993
    Medium & High Voltage MOVs have obtained UL 1449 safety certification
  • May 1992
    CNR was found
  • Aug. 2020
    Guangzhou Asia Pacific power and Technology Exhibition & introduction of new GDT / PPTC products
  • Jun. 2018
    China Great Wall and AOC qualified supplier
  • Mar. 2017
    High Surge H Series s electrical specifications improved
  • Mar. 2015
    New MOV products HE/Hot/C series Published
  • Dec. 2013
    Pass the TS 16949 International quality management system certification of automobile industry
  • May 2012
    20th anniversary of the establishment of the company /  Full introduction of halogen free environmental protection products
  • Apr. 2012
    Dongguan factory pass the IECQ QC080000 Approval
  • Jun. 2009
    TMOV Varistor obtained US patent
  • Apr. 2009
    Mass production of high energy SPD Disc
  • Mar. 2009
    Dongguan factory pass the OHSAS 18001:2007
  • Feb. 2009
    Environmental protection halogen free MOV trial production success
  • Dec. 2008
    The development of halogen-free MOV is completed
  • Nov. 2008
    Mass production of MOV for communication lightning protection
  • Oct. 2008
    Formulation development of Low Clamping Voltage type varistor completed
  • Apr. 2008
    Fire resistant varistor (MOV) development completed
  • Oct. 2006
    Development of overheat protection varistor completed
  • Jun. 2006
    Development of explosion proof MOV completed
  • Nov. 2005
    Successful development of surge protector B series
  • Oct. 2005
    Successful development of surge protector G Series
  • Mar. 2005
    Mass production of lead free environmentally friendly MOV
  • Nov. 2004
    Obtained ISO14001:2014 quality system certification.The SPDs (A series) has obtained a utility model patent in China
  • Apr. 2004
    Hold the first cross strait varistor Technology Seminar
  • Nov. 2003
    Obtain the patent right of US trademark
  • Sep. 2003
    The thermal cut-off protection type MOV has obtained a utility model patent in China
  • May 2003
    Obtain the patent right of Korean trademark
  • Nov. 2002
    The SPDs for Low voltage distribution system ( A series) obtained safety certification of China
  • Oct. 2002
    Hosted the annual meeting of China MOV society Obtained IECQ quality system certification
  • Jun. 2002
    MOV Obtained the CQC Quality Approval of China
  • May 2002
    Mass production of ceramic Gas Discharge Tubes(GDTs)
  • Oct. 2001
    The Surge Protective Devices (SPDs ) became into produce formally The Dongguan factory has obtained ISO 9000 quality system certification
  • Apr. 2001
    Shun Quan electrical Magerial (Dongguan) Co., Ltd. was established
  • Feb. 2000
    Production line of front to finish of MOV in Dongguan new factory
  • Mar. 1998
    MOV Obtained the Safety Approval of VDE
  • Sep. 1996
    Passed ISO9002 / IECQ quality system certification
  • Mar. 1995
    MOVs have obtained UL 1414 safety certification
  • Apr. 1994
    Low Voltage MOVs have obtained UL 1449 safety certification. Change the English name of the company to CeNtRa Science Corp.
  • Aug. 1993
    Medium & High Voltage MOVs have obtained UL 1449 safety certification
  • May 1992
    CNR was found