Certification:CE,GE,TUV,NGV,ISO9001 round sling, synthetic sling, tow strap ,ratchet tie down (cargo lashing).We are implementing ... and GS certificate and ISO9001 certificate. We could offer the sling's width from 30mm up to 300mm , and the ... sling's safety factoris 6:1, 7:1 and 8:1. ...