Yongsan Chemical Inc. is a company that produces Maleic Anhydride and its derivatives such as Fumaric Acid, THPA, and Malic Acid etc.. Based on its annual production capacity 40,000MT of Maleic Anhydride, it provides high-quality products to its customers all around the world.

Korea PTG is one of the world’s major manufacturers of PTMEG, which is the main raw material of spandex or elastane. The company also makes maleic anhydride, 1,4-butanediol, and tetrahydrofuran(THF). Since Korea PTG has its own proprietary manufacturing technologies for PTMEG, the company licenses PTMEG and related technologies to its global business partners.

Yongsan Mitsui Chemicals Co. is a joint-venture company with Mitsui Chemicals Inc. in Japan, that produces high polymer flocculants for wasted water treatments and strengthening agents for pulp and papers. Since its conversion into the cutting-edge bio-based methods introduced by the Japanese Mitsui Chemicals Inc. in 2002, it has made a lot of contributions to the growth of its customers based on its excellent quality and cost competitiveness.