... , steel, stainless steel, iron, brass, copper etc 2. Process: Cutting, stamping, perforating, bending, welding, plating, pad/screen printing, assembing. 3. Equipment ... : Tonnage 25T-400T punching machines, CNC engraving machine, bending presses, plate cutting machine, welding machine, wire cutting machine etc. 4. Surface treatment: Painting, anodizing ...