... ,punched part,metal product 1)material:galvanized,stainless steel,copper etc. 2)High precision stamping. stamping part, ... punched part,metal product1)material:galvanized,stainless steel,copper etc.2)High precision stamping.stamping part,punched ... products and electronic appliances2)Material:alumimun,iron,steel,stainless steel, brass,copper etc.3process/treatment:cutting,stamping,perforating, ...