For different markets and different applications, we can supply polyester webbing sling and round sling with safety factors 4:1, 5:1, 6:1, 7:1, and 8:1. For the USA market, the webbing slings are always 5:1. And for the European market, all the supplies are 7:1 safety factor and for Australian market, webbing slings normally come with an 8:1 safety factor and for other markets, the safety factor will depend on customers' choice.