Lifting sling 1) Material: polyester fiber 2) Safety factor: 5:1, 6:1, 7:1, 8:1 3) Work load limited: 0.5 - 100MT Lifting slingPatent Number ZL 2006 2 34533 Webbing sling is produced from top quality synthetic fibre by advanced international level of weaving technology and equipment in various sewing methods. According to customer's requirement, the safety factor of sling has 4:1,5:1,6:1,7:1,8:1, ...