air suspension Dimension:76*35mm. Material: 50CrVA No of leaf: 1 ... suspension 2.standardDIN, ASTM,JIS,BS,AS,ISO,GB,No truck leaf spring heavy duty nstandard bolt(according to your order ... -type leaf spring product which is used in heavy duty truck and trailers and light vehicles.The raw material we use ... Asia, Mid-East, Euro, North-America, South-America and Africa. air suspension