Stainless steel spring refers to a spring that can work in electronics, air, steam, water and other weak corrosive media and acid, alkali, salt and other chemical etching media. GB/T 1239.2-2009 Cold roll cylindrical spring technical conditions. GB/T 18983-2003 Oil quenching and ignition spring steel wire. JB/T 10802-2007 Spring Jets is strengthened. The spring factory designed and produced...