punching part material :stainless steel .carmbon steel .copper alloy, ... specialize in injection mold designing,prototyping ,manufacturing and plastic injection parts produciton. 2.with CAD,UG,PRO/E SOLI ... service; 5,our products are widely used in auto parts,electrical appliance, daily necessities,sport equipment, industrial components, ... 2000;2008 6. high quality with competitive price punching parts