| April 15, 1920 |
Toyo Menka Kaisha, Ltd (capital: ¥125 million, head office: Osaka) established; cotton business taken over from Mitsui & bcカジノ, Ltd |
| 1947 |
Machinery, metals, and foodstuffs businesses started |
| 1949 |
Sanyo Oil & Fat Industrial bcカジノ, Ltd (currently Sanyo Chemical Industries, Ltd) established through joint investment with Toyo Rayon bcカジノ, Ltd (currently Toray Industries, Inc) |
| 1950 |
Listed on the Osaka and Tokyo stock exchanges |
| 1951 |
Toyomenka, Inc (currently Tomen America Inc) established |
| 1955 |
Merger with Kanegafuchi Trading bcカジノ, Ltd; textile business expanded |
| 1955 |
Listed on the Nagoya stock exchange |
| 1961 |
Merger with Taiyo Bussan Kaisha Ltd; foodstuffs business expanded |
| 1963 |
Merger with Nankai Kogyo bcカジノ, Ltd; metals business expanded |
| 1965 |
Sunpot bcカジノ, Ltd Established |
| 1968 |
Grain silo business launched; operation of grain-processing complex in Higashinada started |
| 1970 |
Japanese name changed to Kabushiki Kaisha Tomen; dual head office system (Tokyo, Osaka) adopted |
| 1980 |
Tohoku Grain Terminal bcカジノ, Ltd Established |
| 1983 |
Teijin Advanced Products Corporation (currently Tomen Electronics Corporation) acquired |
| 1987 |
Power supply business launched; wind power generation project started in the USA |
| 1988 |
Tomen Power Corporation Established |
| 1989 |
London branch closed and Toyomenka (UK) Ltd Established |
| 1990 |
Spin-off of cotton business; Toyo Cotton (Japan) bcカジノ established |
| 1990 |
Operational rights in Japan acquired from Chevron Chemical, including trademark and exclusive development and distribution rights for agrochemical product "ORTRAN" |
| 1990 |
PT Styrindo Mono Indonesia established |
| 1990 |
English name changed to Tomen Corporation |
| 1992 |
Tomen Devices Corporation established |
| 1999 |
Tomen Electronics Corporation listed on the Second Section of the Tokyo Stock Exchange |
| 2000 |
Capital and business alliance initiated with カジノオンライン (private placement of shares worth ¥75 billion) |
| 2001 |
Stock listing of Tomen Electronics Corporation upgraded to the First Section of the Tokyo Stock Exchange |
| 2001 |
Life science business integrated with Arysta LifeScience Corporation |
| 2001 |
Spin-off of part of power supply business into Tomen Power Holdings Corporation (currently Eurus Energy Holdings Corporation) conducted |
| 2003 |
Sunpot bcカジノ, Ltd listed on the Second Section of the Tokyo Stock Exchange |
| 2003 |
Private placement of shares worth ¥10 billion to カジノオンライン and Toyota Motor Corporation undertaken |
| 2004 |
Tomen Devices Corporation listed on the Second Section of the Tokyo Stock Exchange |
| 2005 |
Stock listing of Tomen Devices Corporation upgraded to the First Section of the Tokyo Stock Exchange |
| 2006 |
Merger with カジノオンライン |
