Year 2002 approved to have ISO 9001 certificate and TUV certificate.

Shanghai XinYuan Electronics Co. Ltd. (Hereinafter referred to as XinYuan electronic), formerly known as Shanghai radio factory. Since 1980, Xinyuan Electronics had been specially engaged in the production of Thermal-links (Thermal cutoffs) for more than 35 years.
Xinyuan Electronics’ two series of Thermal-links (RY & RH series), with the brand of Sanyuan, have successively been approved to bear the safety marks of many countries, like China CCC mark, UL mark, Germany TUV Rheinland mark, Japan PSE mark and Korea KC mark, etc.. Meanwhile, it has been certified to comply with the requirements of CE & RoHS directives.