... Korea and Taiwan area.3) We have imported stainless steel,piano wire,carbon steel,phosphor,bronze and so on. Usually,we produce ... springs use different sample and material.1. Material: carbon steel; spring steel; alloy steel; stainless steel.2. Wire Dia.: 0.01mm-10mm3. ISO9001 certificate4 ... , Coating.6. Applications: Cloth Hanger, medical device, electronics, toy ,etc. steel hanger hook and rails