... Description Main products The main product is hi-performance bare spandex yarn,15D,20D,30D,40D,70D,105D,140D,210D,280D, ... through spining channel,and it eventually fomes the spandex bare yarn.The workers pick spandex bare yarn up and place them in the spining-machines ... to the Grading Workshop. 5.The different levels of spandex bare yarn can be divided into the different gradesby workers and packed ...