This product is mainly used for metal (such as silver, copper, lead, zinc, nickel as antirust and corrosion inhibitor, widely used in rustproof oil (fat) products, more for copper and copper alloy of vapor phase inhibitors, circulating water treatment agent, anti freezing liquid, photographic preventer, polymer stabilizers, plant growth regulator, lubricant additives, uv absorber, etc. This product can also with a variety of scale inhibitor, algae fungicidal cooperates to use, especially for closed circulating cooling water system for corrosion effect is really good. 25kg/bag