1.ISO9001:2008 certification 2.OEM service for auto stamping parts. 3.material: carbon steel, stainless steel, brass.. auto stamping partsOEM serviceMaterials: carbon steel, stainless steel, aluminum, brass and bronze ally, copperProcess: cutting, stamping, perforating, bending, weldingWith different treatment, polishing, zinc plating, nickel plating, chrome plating, power coating, e-coating, dip ...