1. Reduce the thickness of the board. This can be done with a steel with a high point. High standard steel, high strength, good toughness and durability.
2. Reduce the weight of the rear axle. Reduce the weight of the bumper, side protection net, mesh spare tire carrier, tool box, tarpaulin stand, etc.
3. There is also the use of suspended rear axle, which is known as the last bridge can be upgraded when not in use. The most common method is to use high-strength (domestic high-grade) steel to reduce its own weight. High-strength steel semi-trailers are lighter in weight than ordinary carbon steel light semi-trailers.