In response to rising fuel prices and strict load standards, semi-trailer manufacturers are accelerating the promotion of lightweight design. For example, **CIMC Vehicles** recently launched a sluice-type semi-trailer with a composite structure of high-strength steel and aluminum alloy, which reduces its own weight by 15%, effectively improving the efficiency of single-trip transportation. In addition, some companies are exploring the pilot application of carbon fiber materials to further optimize the strength-to-weight ratio of the body.