1.Produced with Japanese machinery 2.Available for socks,underwear,narrow fabric 3.Large quantity and good quality Detailed ... Product Description Main products The main product is hi-performance bare spandex yarn,15D,20D,30D,40D,70D,105D,140D,210D ... to the Grading Workshop. 5.The different levels of spandex bare yarn can be divided into the different gradesby workers and ...