... 3.quick delivery,ISO9001, 14001 ROHS 4.free sample compression spring Material:stainless steel,carbon steel,alloy steel Applications: Automotive, ... high and low temperaturesCan be used in various corrosive mediumsMain material: carbon spring steel, alloy spring steel, refractory steel, stainless steel, ... , telecommunication, communication, aviation, space and other civil fields compression spring