We are Manufacturers of zinc sulphate Heptahydrate 21%(Crystal Form), MonoHydrate 33%(Powder Form) Mainly use in NPK Fertilizers, and Agricultural and indurtrial use, Also known as white vitriol. Packing: Zinc Sulphate will be packed in 25kgs, 50kgs plastic HDPE/LDPE bag within PP liner, 25kg or 1000kgs to 1350kgs jumbo bags within PP liner or according to client request.