Multi - Leaf Spring: 1.Thickness:6~50mm 2.Material:SUP6, SUP7, SUP9, SUP9A, 3.SUP10, SUP11,SUP11A Multi - Leaf Spring WONDEE AUTOPARTS multi-leaf spring Factory is the largest leaf spring factory in China. It has ten product lines with advanced equipments making different types of leaf spring including conventional leaf spring, Z type leaf spring and parabolic leaf spring.Yearly turnout is more ...