SPFS is a flocculant in purification of municipal water, industrial water, waste water, domestic sewage and sludge dewatering. Based on the product of Polymer Ferric Sulphate, we develop a new inorganic polymer to decolor the sewage of dyeing and printing industry, it has no the defects of Polymer Ferric Sulphate. It solution is weak acid. Properties:1, New type, high quality, high iron salts of ...