Hexzhou City Yaolong Trade Co., Ltd established in 1991, is a research and deve-lopment, production, trade, after-sales service and investment in one integrated enterprise. Now we are a leading manufacturer of sulfate salts in Guagnxi,China. The main products are Sulfate Salts( manganese sulphate , zinc sulfate, ferrous sulfate and magnesium sulfate), Chlorate and Titanium Dioxide. Our annual production ca-pacity for ferrous sulfate is 15000 MT, for zinc sulfate, manganese sulfate and magnesium ...