leaf spring 1.50CrV4,55Cr3,60Si2Mn, Sup9,SUP 10 2.Parabolic and conventional 3. OEM and after market 4. USD 1.2---2.1/KG Leaf spring/parabolic rolling machine/conventional leaf spring 1. Price:USD1.0-1.9/KG2. Thickness:6-40mm3.Material: SUP9,SUP9A,SUP10,SUP11,60Si2Mn,55Cr3,50CV44.Type: conventional, parabolic, Ztype5. Cutomers OEM, After market6. Yearly turnout: 10000tonsSDGT leaf spring factory ...