- Business
- Dongjin Semichem Co., Ltd. manufactures and supplies electronic materials and foaming agents for semiconductors, flat panel displays, and alternative energy applications. The company produces foaming agents including azodicarbonamide, hydrazide, and UNICELL-G series for plastics and rubber; display materials such as photoresist, stripper, etchant, color resist, background electrode materials, hard coating material, and touch screen materials; semiconductor materials comprising thinner, CMP slurry, anti-reflective coating, spin-on-carbon hardmask, precursor for CVD/ALD, and melamine mold cleaner; and advanced products like fuel cell membrane electrode assembly and Li-ion battery conductive slurry. Dongjin Semichem operates factories in South Korea including Hwaseong, Incheon, Siheung, and Eumseong, with subsidiaries and facilities in the United States, China, and other regions serving markets in Asia, North America, and beyond. Founded in 1967 and headquartered at KGIT Center in Seoul's Mapo-gu, the company focuses on specialty chemicals for the electronics industry. In November 2025, shareholders approved a split plan effective January 1, 2026, to spin off its foaming agent business into a new 100% subsidiary named Dongjin Inokem (tentative), enabling focus on electronic materials growth amid semiconductor recovery; the company plans no listing of the new entity, aims to expand dividends and consider share buybacks, and anticipates U.S. subsidiaries Sinner Corporation and Sulfuric Acid Corporation to achieve mass production sales in 2026.