The selection of slings should be compatible with the types of items to be lifted, environmental conditions and specific requirements.The slings should be strictly inspected before use, and only those that meet the safety color can be used. If any damaged slings are found to be no longer usable, they must be scrapped.When hoisting, the slings selected must be the same length.The sling cannot exceed its rated lifting capacity, and the sling cannot exceed its maximum safe working load.