... steel,carbon steel, 2) Surface finish: zinc/nickel punched,punched part,precision stamping Part1) Material: stainless steel, carbon steel, spring steel, aluminum ... CAD, Solid Work 2001,CAXA, UG, CAD/CAM/CAE.4) Precision machine: normal punch press 5-300 tons, turret punch press ... cabinet, instrument parts, autoparts, electric equipment parts, construction hardware. punched part