1.the belt made of polyester,unaffected by common Acid,moisture,rot and certain chemicals 2.Strong,Soft and Safe 3.easy to use We make safety belts according to ISO4878,EN1492-1,JB/T8521.The webbing for them are made of polyester which cannot be affected by common acid and certain chemicals.Our safety belts are very strong and safe.They are easy to use.