... , plastic etc.Making process: Stamping, deep drawing, bending, punching, threading, welding , tapping, riveting, grindingSurface treatment: Hot galvanized, polishing, chrome/zinc/nickel ... , bus, train and autobike's spare parts and all products need to technique such as welding, stamping, bending, coating, injection molding is ... with your company in the near future. custom made metal machine parts