lifting slings Material: polyester fibre, polypropylene fiber, cotton, etc Type: single, double, four layersAdvantages: 1, light weight, easy to use 2, do not hurt the suspended objects surface smooth, safe lifting 3, 4, strong high, colourful 5, improve work efficiency, save costs 6, corrosion resistance, abrasion resistance and extensive use 7: used for ports, chemical steel, machinery, ...