The synthetic fiber sling produced by our company is a replacement product of lifting ropes and steel wire ropes, which is relatively lightweight compared to similar metal rope chains. At the same time, it is safer, simpler, and faster to operate, reducing the possibility of reverse injury to people; During use, it has characteristics such as shock absorption, non corrosion, non conductivity, and no sparks in flammable and explosive environments; It can reduce the damage to the operating surface and the painted surface caused by lifting operations. Synthetic fiber lifting belts are mainly divided into two categories by type: round, lifting belts, and flat lifting belts. Flat lifting belts are mainly made of nylon fibers (polyamine synthetic fibers), polyester fibers (polyester synthetic fibers), and fibers (polypropylene synthetic fibers), each with its own characteristics, which can be suitable for different environmental situations. However, lifting belts made of different materials