... Of Metal:1. Material:Carbon steel,stainless steel,copper ,brass,aluminum,etc2. Finish:zinc plated,chromated plated, electrophoresis, powder coating, ... etc3.Machine:Stamping machines,automatic stamping machine,punching machines,Oil Hydraulic pressing machines,bending machines,welding machines, lathes.4. Standard ... part, building part, household hardware, etc. Precision stamping of metal