Auto Part switch parts, stamping with auto welding and auto riveting or auto assembly. Auto Part 1: material: Copper, Brass, Bronze, CuSn, CuNi, ... AgCuNi, AgSnO22: OEM/ODM parts of Pressing Parts: Yes, Auto parts, engine parts, computer electronics.3: Process: punching, ... , welding, metal processing4: Applied software for specification drawings: Auto CAD, Pro/E, Acrobat5: Precision punch machine: 0. ...