Tangshan Sunfar Silicon Industries. 

Tangshan Sunfar Silicon Industries Co.,Ltd. is a Chinese enterprise specializing in the research, development, production, and commercialization of a diverse array of chemical products. The company's comprehensive portfolio includes various silicon derivatives such as trichlorosilane, silicon tetrachloride (available in high-purity and electronic grades), electronic grade dichlorodihydrosilane, and electronic grade trichlorosilane. Additionally, their offerings encompass fumed silica, silane coupling agents, potassium hydroxide, and sulfuric acid. Established in Tangshan, China, in 2006, the firm operates primarily within the domestic market.