History
| Mar. 1947 | Toka Shikiso Chemical Laboratory established | 
P.T. Cemani-Toka（Indonesia） |
|---|---|---|
| Dec. 1949 | Restructured to Toka Shikiso Chemical Industry Corporation | |
| May. 1958 | Separating varnish and resin department and set up Fujikasei Kogyo Co.,LTD. | |
| Nov. 1965 | Constructed Saitama Factory in Iruma Gun of Saitama | 
Korea Special Ink Industrial Co., Ltd（Korea） |
| Aug. 1969 | Establishment of Hong Kong Branch | |
| Mar. 1971 | Established a joint venture in Jakarta, Indonesia: P.T. Cemani-Toka Company | |
| Jan. 1975 | For disposal of industrial and trade waste, set up Miyoshi Sangyo Co.,Ltd. | |
| Apr. 1979 | Established Korea Special Ink Industrial Co., Ltd in Seoul, Korea | |
| Oct. 1985 | Changed Hong Kong Branch into Oversea Affiliated Company. Establishment of Toka Ink International (Hong Kong) Ltd. | |
| Dec. 1988 | Established a joint venture company in Hangzhou, China: Hangzhou Toka Ink Chemical Co., Ltd. | 
Hangzhou Toka Ink Chemical Co., Ltd.（China・Hangzhou） |
| Jan. 1989 | To enhance sales at Tohoku region, set up Tohoku Toka Shikiso Co.,Ltd. | |
| Nov. 1990 | Constructed administrative building in Saitama Building. | |
| Jan. 1991 | Changed company name to T&K TOKA | |
| May 1992 | Established a joint venture in Dacca, Bangladesh: Toka Ink (Bangladesh) Ltd. | |
| Nov. 1995 | Established a joint venture company in Guangzhou, China: Toka Ink Guangzhou Ltd. | |
| Aug. 1997 | be listed on the JASDAQ exchange〔Japan Association of Securities Dealers Automated Quotations〕 | |
| Sep. 2000 | Established a joint venture in Jedda, the Kingdom of Saudi Arabia: United Ink Production Co., Ltd. | |
| Dec. 2004 | Going public at JASDAQ Stock Market | |
| Feb. 2011 | Merging with Fujikasei Kogyo Co.,LTD. | |
| Mar. 2012 | Fisted second Section of the Tokyo Stock Exchange. | |
| Mar. 2013 | Listed first section of the Tokyo Stock Exchange. | |
| May 2014 | Toka Ink Guangzhou Ltd. transfer to an affiliated company of Hangzhou Toka Ink Chemical Co., Ltd. | |
| Oct. 2014 | Constructed Technical laboratory in saitama Branch. | |
| Aug. 2015 | Constructed Shiga Branch. | |
| Sep. 2015 | Changed address of head office to Iruma-Gun, Saitama. Changed trade name to T&K TOKA CO., LTD. |
|
| Jan. 2016 | Established a joint venture, Toka （Thailand） Co., Ltd. in Samut Prakan, Thailand. |
Toka （Thailand） Co., Ltd. |
| Dec. 2017 | Acquired 100% share of Royal Dutch Printing Ink Factories Van Son B.V. and made into a subsidiary. | |
| Mar. 2018 | Established ZHE JIANG T&K TOKA FINECHEMICALS CO., LTD. in Zhejiang Province, China. | |
| Jul. 2018 | Established T&K TOKA U.S.A., Inc. in Delaware, U.S.A. | 
ZHE JIANG T&K TOKA FINECHEMICALS CO., LTD. |
| Feb. 2021 | Liquidated Miyoshi Sangyo Co., Ltd. | |
| Apr. 2022 | Moved from the First Section to the Prime Market due to revision of the market classification of the Tokyo Stock Exchange. | |
| Oct. 2022 | Liquidated Toka Ink International （Hong Kong） Lid. | |
| Oct. 2022 | Liquidated Royal Dutch Printing Ink Factories Van Son B.V. （Netherlands）. | |
| Mar. 2024 | Business transfer of Tohoku Toka Shikiso Co., Ltd. | |
| Apr. 2024 | Delisted from the Tokyo Stock Exchange. |