... nylon or polyester air covered with 40d spandex with 3.2 DRAFT AND 100-110 KNOTS PER METER ok for tailor- ... service. We are the only spandex yarn producer in China with denier 10D, 15D, 20D, 30D, 40D, 70D, ... regular ACY yarns are mainly 40D or 70D spandex with polyester or nylon. Our product can be used ... and regards, 150D nylon or polyester air covered with 40d spandex with 3.2 DRAFT AND 100-110 KNOTS ...