Polyester Thread Nylon with filament-based, plus a small amount of nylon staple fibers. kind : 100D-250D/12f thrown silk Nylon ... of powerful, producing socks, underwear, sports Shandeng. Nylon staple fiber primarily with viscose rayon, cotton, wool and other ... , 40D/36F various specifications FDY, HOY nylon filament and various specifications nylon filament and filament twisting business, may come ...