... black 3.The product is hi-performance bare spandex yarn 4.Good flexibility Detailed Product Description Main productsThe main ... can produce white and black spandex. UsageCovering core, air interlacing yarn, circularly knitting, warp knitting, weft knitting, stockings, covering ... dry spinning techniques in the world,so the production line has a huge production capacity and stabilized polymers. 2 ...