Raw silk, is actually a variety of silk, it can be said semi-finished product of bright silk, because the general process of silk making is silk cocoons --- raw silk--- bright silk.
First cocoons are generally added to 80 degrees hot cocoon cooking vessel, after the cocoon becoming softening and expanding, silk is pull out and wrapped in the silk reeling shelves, then this is raw silk.
Raw silk becomes bright silk after processing.
Generally silk fabrics made from raw silk are relatively stiff and easy to make styling; While silk fabrics made of bright silk are relatively soft and close to skin.
So raw silk is also a variety of silk. Generally raw silk fabrics made with raw silk are suitable for making douppion of curtain and silk gauze and taffeta of wedding dress. It is very popular at home and abroad.