Zinc Sulphate Monohydrate Tech 98%/Feed 94.7% White powder Used as raw material,for fiber,feed additive water treatment,etc. Zinc Sulphate MonohydrateAppearance: White powder ... fertilizer and feed additive, etc.If you are interested in zinc sulphate mono/hepta,pls send enquiry to us for more details. Zinc Sulphate Monohydrate