The zinc dust with Total zinc: 99% min Metal zinc:96% min Pb: 0.002% Cd: 0.02% max Fe: 0.002% the zinc dust is mainly used for production of mechanical zinc plating such as screw,iron nail, iron wire and shooting nail., its plating layer is smooth, In additions, special zinc powder that it is suitable for penetrated zinc plating technique standard has some characteristics such as average ...