The fiber belt tensioner is used for securing functions when transporting, shipping or storing goods. Use tight rope: 1, save time and effort, this product potential up to a thousand pounds, one person can make the binding device to produce a huge binding force, fast binding. 2, safe and durable, this product is made of special steel, suitable for machine parts, strong acid, alkali-resistant fiber material. 3, easy to operate the slip wire bin, instant binding, not falling off, instant loosening, easy to operate, trailer tight rope, easy to recover the binding, does not take up space. Tightening device, also known as ratchet tightener, used as a tensioning line in overhead line laying facilities. To use, first loosen the wire rope on the tightening rope, then fix it on the cross arm. Hold the wire with a clamp and then pull the special wrench. Then loosen the pawl, Jiaxing eccentric buckle tensioner loosen the wire rope or galvanized iron wire, then loosen the clamp due to the reverse action of the pawl, then wrap the wire rope or galvanized iron wire on the ratchet roller to tighten the wire. Fix the tightened wire to the insulator.