The packing belt (strapping belt) for packaging is made of polyethylene, polypropylene resin and cold-rolled steel strip as the main raw materials, as well as nylon and polyester. It is made by extrusion and unidirectional stretching and hot barber blue. In addition to the packing and binding of corrugated boxes, hot-rolled steel coils and cold-rolled steel coils, it can also bind glass, pipes, materials, fruits, etc.