... kind of special fiber with high elasticity and elasticity recovery Spandex, scientifically called as polyurethane fiber, is a kind of ... .S.A., Hyosung Korea, Taekwang Korea, Yantai spandex China and Tongkook Korea. Spandex polymer belongs to a linear block copolymer, and ... with any other fibers, the elasticity of spandex is the best. Besides, spandex has many good properties, such as fine denier ...