Hyosung TNC Corporation (Korean: 효성티앤씨, 曉星-) is a South Korean textile manufacturing and trading company specializing in textiles and international trade. The company produces textile materials through its spandex brand CREORA™ and sustainable fiber brand regen™. Additionally, Hyosung TNC operates Some Sevit, a floating cultural complex in Seoul, and provides logistics management services through the Gwangju Refrigerated Warehouse.
History.
Founding and Early Years (1957–1969).
Hyosung TNC Corporation was originally established as Hyosung Trading Company in 1957 by Cho Hong-jai. In 1962, the company relocated its headquarters to 112 Sogong-dong, Jung-gu, Seoul. Two years later, it partnered with Korea Nylon and Hanil Nylon to form Tongyang Caprolactam Co., Ltd., The establishment of Tongyang Nylon Co., Ltd. followed in 1966, along with the completion of its Ulsan Plant. In 1968, Tongyang Nylon introduced its first yarn product under the Toplon brand.
Expansion and Mergers (1970–1989).
The company expanded significantly in the 1970s, beginning with the merger of Tongyang Nylon and Hanil Nylon in 1970. In 1973, Toplon Co., Ltd., Tongyang Polyester Co., Ltd., and Tongyang Dyeing Co.,Ltd. were established. 
In 1977, Hyosung Trading was listed on the stock exchange and relocated to Hyosung Building II in Seosomun-dong, Jung-gu, Seoul.
In 1979, Toplon Co., Ltd. completed its Eonyang Plant, and Hyosung Trading moved its headquarters to Dongsung Building in Namdaemun-ro, Jung-gu, Seoul. The same year, the company entered the marine industry with the launch of its first yacht at the Incheon yacht plant. In 1982, Tongyang Nylon established the Tongyang Nylon Technical Research Institute and completed a Titania plant at its Anyang factory. In 1983, Toplon Co., Ltd. merged with Tongyang Nylon, and the company restructured its textile business division in 1984. A key milestone was achieved in 1987 with the localization of Nylon-66 resin production and the commencement of mass production.
Recent Developments (2011–Present).
In 2011, Hyosung TNC opened Some Sevit, the world’s largest man-made floating island on the HanRiver. A major restructuring occurred in 2018, leading to the spin-off of Hyosung TNC from Hyosung Corporation. In 2019, the company established the Production Technology Center to enhance its research and development capabilities.
In 2022, Hyosung TNC commercialized the world’s first bio-based spandex (regen Bio-Based). The following year, the company underwent a brand renewal, introducing integrated fiber brands under CREORA™ and regen™.