Korean HYOSUNG CHEMICAL Inc. it relies on 50 years of technical skills and knowledge in the petrochemical sector. founded in 1966 as Tong Yang Nylon, the company has gradually become active in the production of engineering materials. HYOSUNG started developing polyketone (PK) in 2004. The material was successfully commercialized in 2013 after 10 years of research and development.

HYOSUNG CHEMICAL manufactures PK under the POKETONE ™ brand in Yongyeon, Ulsan, South Korea with a capacity of 50,000 tons per year.