Auto Parts switch parts, stamping with auto welding and auto riveting or auto assembly. Auto Parts 1: material: Copper, Brass, Bronze, CuSn, ... welding, metal processing4: Applied software for specification drawings: Auto CAD, Pro/E, Acrobat5: Precision punch machine: 0 ... auto stamping and riveting assembly system.6: Surface finishes: Nickel/silver/gold plating. Polishing7: Products range: wall switch, ...