Precautions before using lifting slings:

　　1. The weight of the lifted object shall not exceed the maximum working load of the lifting appliance. Before use, the lifting appliance used shall be visually inspected and its maximum working load shall be verified based on its lifting load. Only when it meets the requirements can it be used.

　　2. The lifting appliance is not allowed to be repaired or reprocessed on its own (welding, heating, heat treatment, surface chemical treatment). If the above treatment is necessary, it should be returned to the original manufacturer or carried out under the guidance of the original manufacturer's experts.

　　3. When lifting heavy objects, it is strictly prohibited to stand under them.