Fence Side Dump Semi-trailer： The self-unloading semi-trailer is suitable for the transportation of loose goods such as coal mines, ore, building materials, etc. The sidecar and backturn self-unloading methods of the carriage can effectively improve the efficiency of the loader's transport of loose goods; Strong lift, good rigidity and toughness, strong load-bearing capacity, no permanent deformation; the main components are processed by advanced equipment, the longitudinal beams are fully automatic submerged arc welding, and the assembly machine is used for precise assembly of wheel axles and leaf springs.