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

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About Us

TOKYO OHKA KOGYO CO., LTD. (TOK) developing
technologies that bring the present into the future.

About Us

TOK Technologies on your side

All around us, the technologies developed by TOK, usually hidden away, quietly enrich our lives.

The World of Nanometer

In the familiar industrial products, TOK's microprocess technology plays a vital role in parts too small to be seen.

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TOK and the Future

TOK is determined to continue contributing to the creation of a harmonious and prosperous society in the future.

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