... export... metal punching part for oem drawings .. Materials: Cold & hot rolled Steel ,Galvanized steel ,Stainless steel ,Aluminum alloy,Brass ,Copper,Plastic,Nylon,Fiberglass ... , CNC Pipe Bender, CNC WIRE EDM and some testing machines .Processing : Stamping , punching, Deep Drawing , bending , welding , threading , grinding , milling , machining ...