... switch parts, stamping with auto welding and auto riveting or auto assembly. Auto-Spot Welding Parts 1: material: Copper, Brass, Bronze, CuSn, ... 3: Process: punching, riveting, welding, metal processing4: Applied software for specification drawings: Auto CAD, Pro/E, Acrobat5: ... machine: 0.5-80tons, Germany and Japan Auto welding system, Japan auto stamping and riveting assembly system.6: Surface ...