Zinc electroplating additives 1)ZnSO4.7H2O%,98%;Zn,22% 2)Package,50kg/bag 3)Usage,feed grade minerals&trace element zinc electroplating additivesMolecular ... important auxiliary materials for viscose and vinylon fiber . used for electroplating, mordants, wood and leather save agents ,bone glue clarify save ... 800umtest sieve) ≥--95-Feed grade standard: 2934-2000 zinc sulphate electroplating additives