... alloy, red copper, brass, bronze alloy are available. (1) Metal processing: stamping, deep drawing , spot or seam welding, spinning ... (1) Certificate: ISO9001-2008, CWB-- "Certification of Companies for Fusion Welding of Steel" , EN287-1 certification. (1) We are experienced ... of OEM manufacturer for various kinds of sheet metal parts .Welcome your inquiryThe machinery of our company is ...