... extensively are used in many fields of communication equipment,electric equipment,security equipment,industry control equipment,medical equipment and consumer filds.Quality:We develop and ... deep stamping, bending, punching, threading,welding, tapping, rivetingMaterialAluminum, copper, brass, stainless steel, steel, iron, alloy, zinc etc.FinishPolishing; Anodize; SandingPowder coating; Vacuum Plating ...