... and fast delivery. TINMY Leaf springs for all kind of trucks, trailers, buses, cars, 4wd, and light commercial vehicles... Tinmy leaf ... leaf spring which are used in heavy duty trucks, semi-trailers, boat trailers, light duty trucks, buses and cars. Our factory yearly turnout ... certified TS16949 and ISO 9001:2000 system. Leaf spring for semi-trailer 75X14-7