| January 1948 |
Founded at Kojima Bldg., Nihonbashi-honcho, Chuo-ku, Tokyo. Capital: ¥500,000. Started sales of chemical reagents. |
| October 1949 |
Constructed Meguro Plant in Yutenji, Meguro-ku, Tokyo. |
| October 1951 |
Constructed Nakano Plant in Numabukuro, Nakano-ku, Tokyo and started manufacturing of chemical reagents. Closed Meguro Plant. |
| December 1958 |
Constructed Headquarters building in Nihonbashi-honcho, Chuo-ku, Tokyo. |
| December 1963 |
Constructed Saitama Plant in Omano-cho, Koshigaya-City, Saitama. Closed Nakano/ Shimura Plants. |
| March 1965 |
Newly constructed a research institute within the land of Saitama Plant. |
| September 1966 |
Increased the capital to ¥100,000,000. |
| December 1974 |
Increased the capital to ¥150,000,000. |
| April 1980 |
Acquired approval of bonded warehouse by Tokyo Customs within Saitama Plant. |
| March 1985 |
Constructed Okuma Plant in Ottozawa, Okuma-machi, Fukushima Pref. and expanded production ability of fine chemicals. |
| March 1988 |
Constructed Tsukuba Plant in Takasai, Shimotsuma-City, Ibaraki Pref. and expanded production ability of chemical reagents. |
| March 1994 |
Constructed the second synthesis building at Okuma Plant. |
| May 1995 |
Constructed an electronic industrial medicine manufacturing building within Saitama Plant. |
| August 1996 |
Newly constructed manufacturing facility corresponding GMP in the second synthesis building of Okuma Plant. |
| December 1996 |
Newly constructed manufacturing facility corresponding GMP in the third manufacturing building of Saitama Plant. |
| December 1998 |
I All offices obtained ISO9001 certification for all of our products. |
| March 1999 |
Newly constructed the third synthesis building at Okuma Plant. |
| February 2000 |
Newly constructed the fourth synthesis building at Okuma Plant. |
| April 2001 |
Reconstructed the third manufacturing building at Saitama Plant and constructed a four-story chemical product manufacturing building. |
| March 2002 |
Headquarters, 3 plants and all offices obtained ISO14001 certification. |
| October 2003 |
Constructed a medicine manufacturing facility and trial manufacture facility in the third synthesis building at Okuma Plant. |
| October 2004 |
Established a joint venture company of chemical product manufacturing in Changshu-City, Jiangsu Province, China. |
| December 2004 |
Newly constructed the first manufacturing office and administration building at Saitama Plant. |
| July 2005 |
Newly constructed the fifth synthesis building at Okuma Plant. |
| February 2007 |
Newly constructed the sixth synthesis building at Okuma Plant. |
| August 2008 |
Expansion of Inspection Section of Okuma Plant. |
| March 2011 |
Okuma plant is occurred by East Japan great earthquake disaster and
nuclear plant accident and closed just after constructed the seventh
composition ridge. |
| March 2013 |
Ibaraki Factory start as a substitute factory of the Okuma factory in
Nakagocho, Ibaraki and customized synergy service began. |
| March 2013 |
Constructed Ibaraki Plant as a substitute of Okuma plant in
Nakago-machi, Ibaraki Pref and Commissioned Manufacturing of
Chemical Product service began. |
| March 2016 |
Completed the second phase construction at Ibaraki Plant, Constructed the third synthesis building and Contracted synthesis service began. |
| February 2018 |
reduced the capital to ¥100,000,000. |