Spandex has entered a new round of business cycle

Spandex scientific name polyurethane fiber, also known as polyurethane Elastic fibers, which belong to the category of synthetic fibers, are highly elastic and can be stretched6～7 times, but can quickly return to the original state with the disappearance of the tension, its molecular structure is a chain-like, soft and extensible polyurethane, through the combination with the hard chain Segments are linked together to enhance their properties.…