... spring for automobiles Specifications1) Salt Spray Test:>800H 2) Detector Flaw: 100% 3) Fatigue Test: >60,000,000 Funtion The Spring ... Serial Product Cover Spring and Stamping Part,Such as Clutch Spring,Suspension spring,valve Spring,Compression spring,Tension Spring,Torsion SpringCooperation ... world-class testing machine,such as spring tension and compression testing mcahine controlled by computer, ...