... 1) Products Scope: Compression Spring, Extension spring, Torsion Spring, Battery Spring, Power spring, Coil spring, leaf spring, suspension spring, etc. 2) Main material: Carbon spring steel, alloy spring steel, Refractory steel, stainless ... ) Eco-friendly products:EU standards compliance 6) Applications:All kinds of cars, machinery, home appliance, electronic products, electric appliance, cameras, ...