... 5 MOQ:500 pieces â… .Spring 1 Material : Titanium, Carbon steel, Silver, Nylon, Cr5, Iron, Nickel plated carbon line, Nickel plated ... blue black zinc-plated, rust preventive oil, titanium alloy galvanized, silver plating, plastic, electroplating, anodizing etc3 Applications:Automotive, instrument, electrical equipment ... spring clips/clamps and compression/pression spring in dongguan guangdong china