2000 A.D. Chau-hua was established and operated
2001 A.D. research and development production tact switch
2001 A.D. research and development production Dip switch
2001 A.D. research and development production Slide switch
2002 A.D. ISO9001 quality system certification
2005 A.D. full import ROHS
July 2009 A.D. Suzhou Chau-hua Electronics Co. Ltd.
Set up new product development team and integrate domestic marketing team
2011 A.D. Shanghai office was established
July 2011 A.D. Become a qualified supplier of weidmueller Suzhou
October 2011 A.D., Sany was certified as a qualified supplier
2012 A.D. Shenzhen office was established
July 2014A.D. Become KINGLONG /HIGER qualified supplier
July 2014 A.D. ad Eaton EATON/ audit as a qualified supplier
November 2014A.D. The development of the automotive industry silica gel seal switch into the automotive industry 2 echelon supply chain
January 2015 A.D. Establish CHA-Hongye Technology (Shenzhen) Co., Ltd.
September 2016 A.D. Establish CHA -Wit Large (Dongguan) Manufacturing Co., Ltd.
March 2016 A.D. Import ISO9001 quality management system