HengYang HuTong Building Materials chemical co. Ltd is a professional engaged in\water treatment product research and development and production of high technology production enterprise. We have 50 thousands tons of annual production capacity about Solid ferric sulphate in Henan province, also have 100 thousands tons of annual production capacity about Liquid ferric sulphate and 20 thousands tons of annual production capacity about Solid ferric sulphate in Hunan province.