Air covered yarn: nylon +spandex, polyester + spandex we are a large-size company specilizing in manufacturing the nylon yarn and covered yarn, we have produced the nylon yarn more ... .Color: Raw White , BlackDTY 15d/7f , 20d/7f, 30d/12f, 40d/12f RW.DTY 70d/24f/1 , 70d/24f/2, 100d ... /36f/1, 100d/36f/2 RWDTY Microfilament yarn: 40d/34f , 70d/48f , 70d/68f, RWDTY Dope dyed yarn: 40 ...