... in manufacturing the nylon yarn and covered yarn, we have produced the nylon yarn more than 10years, and ... Covered YarnNYlon + Spandex: 20/15 20/20, 20/30 20/40, 40/40, 70/70, 140/140, 20/70,40/70Draw Rate : ... 1.9 , 2.2, 2.4, 2.6, 2.8, 3.0, 3.2 available.Color: Raw ... BlackDTY High Denier yarn: 200d/72f --1000d, RW Air Covered Yarn Nylon spandex cover yarn 20/30 12 20/40 36