... parts, stamping with auto welding and auto riveting or auto assembly. stamping parts and electrical contacts:1: stamping parts material ... : Copper, Brass, Bronze, CuSn, CuNi, Ni, CuNiZn, Monel, rivet material: solid silver alloy contacts and ... : 0.5-80tons, Germany and Japan Auto welding system, Japan auto stamping and riveting assembly system. 6: ...