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September 2004 | Kanto Chemical Holdings was established with Kanto Chemical, Sanritsu Chemy, and Sankyo Kagaku Yakuhin incorporated as subsidiaries. |
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June 2005 | Keiyo Chemy became a subsidiary. |
June 2013 | Yamagata Science Chemical, Tokai Chemy, Chugoku Chemy, and Kanto Chemical Engineering became subsidiaries. |
June 2014 | Tojo Shokai and Kanpan Techno became subsidiaries. |
October 2014 | Tojo Shokai and Kanpan Techno were merged into Hokkai Chemy. |
December 2015 | Obtained the ownership of CHROMagar in France. |