The semi-trailer with bars and grilles is one of the most widely used models in the logistics transportation industry. With a structure combining high bars, grilles, and a closed floor, it combines the load capacity of a bar truck with the protection of a closed truck. Primarily used for transporting agricultural products, hardware items, bulk goods, furniture and appliances, animal feed, light industry products, etc., it is characterized by a lightweight self-weight, large load capacity, easy loading and unloading, and great versatility.