TOKYO OHKA KOGYO CO., LTD. (TOK) provides chemical products, such as photoresist, and equipment for semiconductors and liquid crystal displays.

Corporate Information

Corporate Information

Introduction of TOKYO OHKA KOGYO CO., LTD. (TOK),
such as corporate outline, our history, and governance.


Message from the President

President Noriaki Taneichi delivers a message about our management principles and management policy.


Our offices and sites in Japan and overseas provide TOK's microprocess technology to our customers.

Corporate Video

View the Corporate Presentation video in English, Chinese, Korean, and Japanese.

Corporate Outline

Corporate outline and business details are posted.

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Our history of the development and progress of precision processing technologies based on photolithography.

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Executives & Corporate Auditors

Introduction of the board of directors, corporate auditors, and officers.

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Organization chart can be seen.

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We have positioned the corporate governance as one of our most important management issues.

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Introduction of subsidiaries in Japan and overseas.

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Access Map

Access map to offices in Japan can be seen.

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Corporate Information