1. DTY flame retardant yarn, SD 2. Size: 75d, 100d, 150d, 300d 3. high quality ... 4. NIM, SIM,HIM DTY Flame Retardant Yarn, SDEternal flame retardant 1. Material: 100% polyester2. Size 75D/36F ... /48F, 150D/72F HIM 150D/96F SIM3. The raw white yarn can be flame retardant, and dont need to add any ...