... ),75 DTY /20 spandex (rw and black ) , 75 DTY /40 spandex (rw and black ) ,100 DTY /40 spandex (rw and black ) .150DTY/40 ... spandex (rw and black ) ,200 DTY /40 ... (rw )100FDY/40 spandex,120FDY/40 spandex, 150FDY/40 spandex, 200FDY/40 spandex, 250FDY/40 spandex,Photo of air covered yarn factory: polyester yarn ...