It is the raw material for the production of other silk yarns and fabrics. Our main specifications are 20/22D, 27/29D, 40/44D. 1. material: 100% mulberry raw silk 2. specification: 20/22,27/29,40/44 3. quality: 4A, 5A, 6A 4. colour: natural white,or dyed color 5. packing: 30kgs/carton, 60kgs/bale