... copper, cold rolled steel sheet, high carbon steel2. Progress: cutting, stamping, perfortaing, bending, welding, plating, pad/screen print, assembing3. Equipment, tonnage 10T ... -200T puncing machine, CNC engraving machine, bending presses, plate cutting machine, welding machine, wire cutting machine4. Surface treatment: painting, anodizing, sandblasting, chrome plating ...