... 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 steel, high temperature Resisting alloy, corrosion-resistant alloy and bronze. 3)Size: Different ... 6) Applications:All kinds of cars, machinery, home ...