Bin laden semi-trailer parts used field fence structure design trailer. Mainly for the transport of agricultural products and other light cargo. 1, the vehicle and the fence structure design technology combined with user goods category, designed to meet the situation under full load to reduce the car weight, simple structure suitable for easy disassembly for users to reduce investment costs, create more profit value. 2, frame: the use of stringers and beams throughout the whole set welded space frame structure. A balanced frame strength, stiffness, toughness, strong bearing capacity, no permanent deformation. 3, warehouse-column series trailer frame are wearing beam structure, stringers using flat type or gooseneck. Web height from 400-500, stringers using automatic submerged arc welding, frame uses blasting process, stringers and beams penetrate and welding. 4, the suspension system: A new suspension system, high strength, high impact resistance; each axle load balancing, system lever angle designed, run frequent bumps in the process, reduce friction slip away from the tire and the ground , reduce tire wear, while the adjustable rod, adjustable wheelbase, avoid bias tire run-bite round phenomenon.