Spandex creation needs substantial technical know-how and specialised tools, which means which the manufacture of spandex is usually concentrated in a couple of large corporations that have the sources to speculate in investigation and advancement. Spandex bare yarn, also often called elastane or elastic polyurethane fiber, can be a synthetic https://rubber-covered-yarn48134.mdkblog.com/37449416/everything-about-covered-spandex-yarn