... kinds of springs, including Compression spring, Extension spring, Torsion spring, Wire spring, Art and Craft spring, Battery spring etc. We offer competitive ... and customer satisfaction4> specialized in producing precision small spring with Wire Diameter from 0.08mm-10.0mmProduction ... Alloy steel contains 60Si2MNA, 60Si2CRVA, 55CrSi.Product performance1.service life: 1,000,000 times—5,000,000 times 2 ...