1, no marks, signs or signs, signs of the lifting belt is prohibited to use; 2, when the surface of the lifting belt is damaged, including the lifting belt was cut by sharp objects, belt edge cut off, etc. is prohibited to use; 3. Do not use if the soft seam is torn; 4. Do not use if the slings change more than 5% ; 5. Do not use if the slings change more than 3% .