... no mechanical impurities USAGE : This product is mainly used for metal (such as silver, copper, lead, zinc, nickel as ... phase inhibitors, circulating water treatment agent, car fangdongye, photographic prevent WuJi, polymer stabilizers, plant growth regulator, lubricant additives, uv ... : plastic woven bag, multiple bag, cardboard drum, all-paper drum, metal drum lined with plastic bag . 20kg/bag. 25 kg ...