Manufactured to EN 149-2, conforming to the EC GS, ISO4878, JB/T8521.
1. Color code. In according with international standard, to validate sling capacity.
2. Special thickness sleeves and special technical to add using life.
3. Clearly print WLL and length on surface of sling.
4. If the core material no break, no loss of strength from abrasion, there is simple way, it is easy to differentiate to decide if the sling is taken away from service or not.
100% polyester has less than 3% extension at rated capacity, and will return originally length, and 9-12% extension at break.