... Material: steel 2, Processing method: stamping,welding, zinc electroplating 3, customized design roof's ventil stent partItem ... .Material:Steel, stainless steel, carbon steel, aluminum, zinc, brass, plastic etc.Making process:Stamping, deep drawing ... tapping, riveting, grindingSurface treatment:Hot galvanized, polishing, chrome/zinc/nickel plating, PVC coating, anodize, E-coatingApplicable industry: ...