... steel, Iron, copper, aluminum Finish: plating of zinc, nickel, tin etc, anodized, painting, black Process: stamping, machining, cold forming ... : punching machine, lathe ,cold forming machine, deep drawn machine Application ... NameMaterialsurface treatmentToleranceSizeProduction abilityStamping partSteelcopperbrassBronzess steel AluminiumPaintPolishingZinc platedNickel platedBronze platedSilver ...