Cavern Industry has establishing since 1992 and passed ISO 9001:2000 quality system approval,is a foreign-capital chemicals enterprise,and our branch company in HK,which situated in central region of China where is abundant in chemical raw material resources.The group, owning three chemical factories, dedicated to manufacturer, R&D, and deep-processing of powder products,including high quality Sodium Tripolyphosphate (STPP),Sodium Hexametaphosphate(SHMP), Caustic Soda,Zinc Oxide, Titanium Dixoide,lithopone.the productivity in the leading position of domestic same trade.With the gain of Hongkong management, competitive and skillful workers, closed to the sources of materials and strict quality control policy, we are famous for making the high quality products at competitive price among all customers.