... Material: cold rolled steel,stainless steel,galvanized steel,copper ,brass.6. Equipment: 25-400ton punching machine, CNC machining, milling, turning, ... lathe cutting, planning machine, heat treatment machine, varnish baking7. Finish: zinc plated, chromate plated, powder coating etc.8. Part ... and good supplier in China of machining parts and stamping parts. We have ...