... service 4.Competitive Price YPT Technology Ltd., specialize in stamping parts from most materials including steel,galvanized steel ,brass,copper and aluminum ... : C51000, C52100, C54400, etc5. Iron: 1213, 12L14,12156. Aluminum: Al6061, Al60637.OEM according to your requestProducts Availablebolts, screws, nuts ... air transportation or as requiredCertificateISO9001:2008 OEM high precision sheet metal part