Dongjin Semichem Co., Ltd. engages in the manufacture and sale of materials for flat panel display, semiconductors, alternative energy sources, and foaming agents. It operates through the following business divisions: Domestic Electronic Materials, Domestic Reined Oil, and Overseas Electronic Materials. The Domestic Electronic Materials business division includes photoresist, wet chemical, and blowing agents. The Domestic Refined Oil business division offers recycled oil for wet chemicals. The Overseas Electronic Materials business division supplies chemicals for cleansing photosensitive layers. The company was founded in 1967 and is headquartered in Incheon, South Korea.