... size 3)Type:Type:Conventional,Parabolic, Z-type,Galvanized Slipper springs 1)Marerial:SUP7,SUP9,SUP9A,SUP10,SUP11,SUP11A;2)Type ... 50mm 5)Certificate:ISO9001/2000 /TS16949 control system.TINMY Leaf springs for all kind of trucks, trailers, buses, cars, 4wd, and ...