... Product Description Main productsThe main product is hi-performance bare spandex yarn,15D,20D,30D,40D,70D,105D,140D,210D,280D,420D ... through spining channel,and it eventually fomes the spandex bare yarn.The workers pick spandex bare yarn up and place them in the spining ... in one carton, the net weight (the total weight) of spandex yarn in one carton as follows:420D\560D\840D\11240D\1680D ...