... 4. Shorter lead time sheet metal, enclosure, converter box1. Material; aluminium, steel, stainless steel, iron, brass, phosphor copper, cold rolled steel sheet, high carbon steel2. Progress ... print, assembing3. Equipment, tonnage 10T-200T puncing machine, CNC engraving machine, bending presses, plate cutting machine, welding machine, wire cutting machine4. Surface treatment: painting ...