cnc metal precision part 1. Material:carbon steel,stainless,aluminum alloy 2 ... , steel structure, auto parts, fifth wheel, garage, fasteners, crane parts, elevator parts, machining parts, mouldsMaterialcarbon steel, stainless steel, aluminum alloy, copperProcedureCutting,stamping,punching,threading,bending ... cutting machine, hacksaw cutting machine, rolling machine and so on. cnc metal precision part