... above high temperature smelting made after cooling, after smashing plastic, magnetic separation to iron, screen is divided into many ... dirt rust removal, such as gravity die mold, rubber mold of the oxide or from the shape of ... etching artists. 4, pretreatment processing: TEFLON (TEFLON), PU, rubber, plastic coating, rubber barrels (ROLLER), electroplating, metal spray welding, plating titanium before ...