Standard : ISO4878 EN1492-1:2000 JB/T8521-2000 Material: Polyester weave methods: plain weave length: 1m-12m width: 25mm-300mm Layer: single-layer,double-layer Safety factor: 5:1 6:1 7:1 8:1 Special packing and logo as buyer's request. Every slings packed in PE films,then usually pack the m in the carton. Maintenance Methods: Webbing sling should be placed at the place with enough light when you don't use webbing sling should be kept in the dark and no ultraviolet radiation conditions Shouldn't be used without a jacket straps Don't drag when moving webbing sling and goods,do not make the knot.