Semitrailer Leaf Spring 1.Thickness: 6~50 mm 2.Material: SUP7, SUP9, SUP9A,SUP11A 3.TS16949,COC,CIQ,SONCAP China WONDEE Semitrailer Leaf Spring 1.Types of leaf spring including: a)conventional leaf spring,b)Z type leaf spring,c)parabolic leaf spring. 2.Thickness from 6 mm to 50 mm 3.Components: leaf,clip,center bolt 4.Color: red,shinning black,dark black,grey,blue 5.Production ability: 20000 Tons ...