... ,ISO9001, 14001 ROHS 4.free sample torsion springMaterial:stainless steel,carbon steel,alloy steel Applications: Automotive, medical device, electronics,toy and so onThis ... be used in various corrosive mediumsMain material: carbon spring steel, alloy spring steel, refractory steel, stainless steel, high temperature resisting alloy, corrosion-resistant alloy and ...