The product is suitable for the safety protection when the crane is accidentally dropped when lifting the crane. It can effectively protect the life safety of the ground operator and the damage of the workpiece being lifted. It is used in metallurgical automobile manufacturing, petrochemical engineering, engineering construction, electric power, High-altitude workplaces such as ships, communications, pharmaceuticals, and bridges. This product is only part of the system, and the fall protection system is: vertical life system and horizontal life system. Horizontal life systems are used extensively.