Ningbo Xinyuan Electronic Co., Ltd, formerly known as Shanghai Radio Factory ONE, has been engaged in developing and producing thermal link and thermal cut off for over 35 years. We are the one of TOP 3 thermal link manufacturers in China, joined the committee of China National Thermal Link Test Standard (GB9816-1998) and issued the first version.

Under IS0 9001 quality assurance system, we are producing over 200 million pcs organic type (RY type) thermal links every year. Our products got the certification of TUV, CE, PSE, KC, CB and UL. In 2013, we cooperated with UL and established a laboratory under Witness Testing Data Program. Then, we became the only one thermal fuse manufacturer in China who has a laboratory under Witness Testing Data Program (WTDP).