Tokyo Ohka Kogyo Co., Ltd. manufactures and sells chemical products and process equipment in Japan and internationally. The company offers g/i-Line, KrF excimer laser, ArF excimer laser, and EUV photoresists; wet etching and deep dry etching resist; developer and rinse, and stripping solution; thinner; adhesion enhancing, DSA, reflective multilayer, and file formation materials. It provides semiconductor packaging manufacturing products, including lift-off, bump formation, redistribution layer resist, protective coating materials, and adhesives; CMOS sensors and driving support system; and transparent materials and photosensitive permanent films. In addition, the company offers Sievewill, a life science research tool that traps cells and allows solutions to pass through; photo patternable permanent materials for structure fabrication/photo patternable adhesives materials; optical materials, such as NIL and hydrophilic coating materials; and high functional materials comprising porous polyimide film, and hydrophilic coating materials. The company was incorporated in 1940 and is headquartered in Kawasaki, Japan.