... 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 ... , multiple bag, cardboard drum, all-paper drum, metal drum lined with plastic bag . 20kg/bag. 25 kg/bag. 1,2,3-Benzotriazole