1. For endless round sling, its life span will get longer by changing its loading point in use;

2. It is easy to handle and tight to attach the load surface. The delicate and dyeing surface is kept from damage;

3. High ratio of force to weight, light in weight, and also flexible. It is available that the sling is used without glove or other protective measure;

4. Color code to be fabricated as per international standard verifying WLL of sling; 1 WLL each black line, by which it is easy to identify the WLL of sling;

5. High abrasion resistance, without joint inside, low elongation, at WLL, the elongation not in excess of 3%;

6. Polyester sling keeps from the affect by majority of mine acid, but gets damaged from alkali easily.