Shanghai Harhigh is a wholly-owned subsidiary of Sanhuan Welding Materials. Sanhuan Welding Materials Co., Ltd is one of the largest brazing material manufacturer in China. We have been produced Brazing Alloys for over 22 years. We develop, produce and sale Silver based, Mid-temperature copper based, Aluminum based brazing filler metals and matched fluxes. Our brand ‘Sanhuan’ is the most famous in China. And we have long-term business relationship with DAIKIN、MITSUBISHI ELECTRIC、PANASONIC、HITACHI、SHARP、LENNOX and so on.