... 500 pieces Ⅰ.Spring 1 Material : Titanium, Carbon steel, Silver, Nylon, Cr5, Iron, Nickel plated carbon line, ... black zinc-plated, rust preventive oil, titanium alloy galvanized, silver plating, plastic, electroplating, anodizing etc3 Applications:Automotive, instrument ... screws, stamping parts and other metal parts. Our main production modes are designing and proofing based on customers’ drawings or ...