Hyosung TNC Corporation manufactures and sells fiber in South Korea and internationally, offering spandex, nylon, and polyester. It also provides general apparel, workwear, and industrial fabrics, as well as dyed products such as nylon fabrics, polyester fabrics, nylon/polyester stretch fabrics, and cotton-blend fabrics. In addition, the company offers marketing services in the trading sector for steel and chemicals, and operates Sevit Island, a floating structure built on a floating body on top of the water. Founded in 1957, Hyosung TNC Corporation is headquartered in Seoul, South Korea.