polyester round sling,endless round sling Certificate:CE,GS,TUV polyester round sling:1) Webbing slingmMaterial: polyester, nylon, polypropylene 2)webbing sling color: as code for example 1ton violet, 2ton green,3ton ... ) By color, number of stripes and printing on sling and label8)Our webbing sling has obtained Certification:CE, GS,TUV,NGV,ISO9001 round sling