1) Detector Flaw:100%,Salt Spray Test:>800H 2) OEM: 30 Years 3) Used in car suspension system Detector Flaw:100%,Salt Spray Test:>800HZero-defect,high quality The most advanced technological levels in the world We have engineering staff and computer software to offer design assistance, problem solving, and prototype production."Shuangdi" Serial Product cover Spring and Stamping Part,Such as Tension Spring,Torsion Spring,Compression Spring,Suspension Spring,Valve Spring,Clutch Spring The Surface treatment is Powder CoatingTS16949,ISO14001,OHSAS18001 Certificated

Compression Spring (TS16949 ISO14001 OHSAS18001 Certificated)