Viscose Yarns

I run a company that is producing scarves from polyester and we just started cotton to do scarves in ethiopia,
As I was researching I found out that using viscose treads as a row material would make the warp strong, so the weavers will weave easily and the tread is soft as cotton.
So I am looking for suppliers who can help. And explain how it works, and really would love to have few viscose treads to do sample.