coil spring for automobiles Specifications1) Salt Spray Test:>800H 2) Detector Flaw: 100% 3) Fatigue Test: >60,000,000 Funtion The Spring used inc ar suspension system, absorb shake and made drive comfortably High quality Spring Detector Flaw:100%,Salt Spray Test:>800HBrand "Shaungdi" Serial Product Cover Spring and Stamping Part,Such as Clutch Spring,Suspension spring,valve Spring,Compression ...