... steel) Stainless steel, Aluminum alloy,Surface Treatment: Chrome plating, Silver plating, Zinc plating, Nickel plating, Tin-plating, Passivate, Oxidation, Phosphorization, Radiant Plated,Process: Heading, Threading ... , drilling screws, chipboard screws, drywall screws, furniture screws, rivets, anchors and many other hardware products made of carbon steel, alloy & stainless steel, aluminum ...