... .Material:iron, carbon steel, stainless steel, brass, copper, alloy steel, aluminum, cold rolled steel with various ... plating;3.Surface treatment:kinds of plating (Zinc, Nikel, Chrome, Tin, Ag); Painting, Powder, ... Welding Machincs, Silkscreen Machines, Heating Oven6Finishing AvailablePower coating ,zinc, copper, nickel, chromium plating, aluminum parts surface oxidation treatment, ...