Ultrasonic Cotton Yarn humidifierIts main use for finalize after merger, twist, stable twist in a certain pressure Ultrasonic Cotton ... wipes, curtain finalize, spandex coated yarns, cotton, rayon, polyester fiber theory, computer floss silk, sewing thread, knitting line, lace yarn, zip ... moisture 1.5-3%.2. Its main use for finalize after merger, twist, that is, stable twist in a certain pressure ...