Tulle is fabric. The only thing you need to find out from the vendor is does it pass flamability testing. Ask for their testing certificate. Tag can go on the back of the waist. YOu should be able to tack it on. You don't really do anything with your SB#, it is used when you make a COC to give to any wholesale customers for them to keep on file, Stores, Craft fairs, and the like. Not your retail customers like on Etsy.
