... Tianjin Xinxin Chemical Factory, the largest manufacturer of zinc sulphate in China,and our product export to many ... zincsalts. It is also used in synthetic fiber industry, zinc plating , pesticides, flotation, fungicide and water purification. In ... etc 3.Specifications: Items Specification I Type (Zinc Sulfate Monohydrate) II Type(Zinc Sulfate Heptahydrate) High-Class First-Class Qualifier High-Class ...