... safety: 7:1 3.Break strength:3000kgs Polyester Lifting Strap Main technical data Material: polyester, polypropylene, nylon, Dubang ... the lifting, do not twist, twisted sling 3, do not let the sling knot 4, to avoid tearing or ... area of ??work overload 5, when the mobile sling, do not drag it 6, to avoid erosion ... or shock load 7, each in a sling before each use to check 8, inorganic acid- ...