... Automotive, medical device, electronics,toy and so onThis spring will not be magenetic field,not fever,not be broken ... be used in various corrosive mediumsMain material: carbon spring steel, alloy spring steel, refractory steel, stainless steel, high temperature ... communication, aviation, space and other civil fieldsFeatures: 1) Torsion spring of ultra fine wire with wire diameter less than 0 ...