“The e-Material Global Company” for a sustainable future through chemistry.

Tokyo Ohka Kogyo, as a leading manufacturer of photosensitive photoresists, supports the development of various industrial fields through polymer design technology, microfabrication technology, and high purity technology. We provide full lineup of photoresists for front-end and semiconductor manufacturing (g/i/KrF/ArF/EUV). We develop and commercializes photoresists that are optimal for various packaging processes, even the most advanced. For MEMS purposes, we also offer photosensitive permanent films and adhesives high quality fabrication of microfluidic channels and micro constructs.