| 1938 |
Toho Chemical Industry Co., Ltd. has been providing high-performance chemical products such as surfactants, special solvents, polymer additives, and resin products since its founding in 1938. |
| 1938-03 |
Founded in current Katsushika Ward, Tokyo, with a capital of 400,000 yen, began manufacturing metal oil agents |
| 1947-01 |
Started manufacturing textile auxiliaries |
| 1950-03 |
Opened Nagoya branch in Nagoya City |
| 1952-01 |
Successfully developed technology for agricultural emulsifiers and spreading agents, started manufacturing; began manufacturing various industrial surfactants and paper-making auxiliaries |
| 1956-11 |
Established Osaka branch in Osaka City |
| 1960-08 |
Built a new Chuo factory in Oppama, Yokosuka City, Kanagawa Prefecture |
| 1961-01 |
Started manufacturing synthetic rubber emulsion polymerization auxiliaries and synthetic resin products |
| 1962-02 |
Completed manufacturing technology for solvent ethylene glycol monobutyl ether, realized domestically produced for the first time in Japan |
| 1962-05 |
Listed on the Tokyo Stock Exchange Second Section |
| 1964-05 |
Established a technical research institute in Yokosuka City, Kanagawa Prefecture (currently Oppama Research Institute) |
| 1965-03 |
Acquired shares of Modern Chemical Industry Co., Ltd., a paper-making auxiliary manufacturer, and made it a subsidiary (currently a consolidated subsidiary) |
| 1965-07 |
Built a new Tokuyama factory in Tokuyama City (currently Shunan City), Yamaguchi Prefecture, and started manufacturing synthetic rubber emulsion polymerization auxiliaries |
| 1967-10 |
Established a subsidiary, Toho Petroleum Resin Co., Ltd., built Yokkaichi factory in the Yokkaichi industrial area, and started manufacturing petroleum resins |
| 1969-06 |
Established a surfactant research institute in Katsushika Ward, Tokyo (later relocated to Chiba Research Institute) |
| 1970-08 |
Established a subsidiary, Toho Chiba Chemical Industry Co., Ltd., built a Yokosuka factory in the Keiyo industrial area, and started manufacturing surfactants |
| 1975-10 |
Started manufacturing polyethers at Toho Chiba Chemical Industry Co., Ltd. |
| 1978-06 |
Established Yokosuka Environmental Technology Center as a subsidiary, began environmental survey, measurement, and analysis services (currently a consolidated subsidiary) |
| 1979-04 |
Constructed a new surfactant plant at Oppama Factory, established mass production system for solvents, crude oil agents, and lubricant additives |
| 1986-09 |
Installed cationic cellulose production equipment at Tokyo Factory |
| 1987-12 |
Established a continuous sulfonation device at Toho Chiba Chemical Industry Co., Ltd., Yokosuka Factory |
| 1988-10 |
Subsidiary, Toho Petroleum Resin Co., Ltd., was absorbed and merged (currently: Yokkaichi Factory) |
| 1989-03 |
Public offering of 2,000 thousand shares (capital: 1,755 million yen) |
| 1990-10 |
Established a research building in Yokosuka City, Kanagawa Prefecture |
| 1993-10 |
Subsidiary, Toho Chiba Chemical Industry Co., Ltd., was absorbed and merged (currently: Chiba Factory) |
| 1994-03 |
Established a joint venture, Kaijuu Toho Lin Chemical Products Co., Ltd., in Guangdong Province, China (currently: consolidated subsidiary, Kaijuu Toho Chemical Co., Ltd.) |
| 1995-06 |
Relocated and consolidated Tokyo Factory to Chiba Factory, and added a fine chemical plant within the same factory |
| 1996-07 |
Relocated headquarters to Akashicho, Chuo Ward, Tokyo |
| 1998-05 |
Established a pilot plant at Ohi Research Institute |
| 1999-01 |
Established electronic information material manufacturing equipment at Chiba Factory |
| 1999-02 |
Established a subsidiary, Toho Chemical Warehouse Co., Ltd. (currently: consolidated subsidiary) |
| 1999-12 |
Obtained ISO9001 certification (JQA-QM4007) |
| 2000-02 |
Established a joint venture, TOHO CHEMICAL (THAILAND) CO., LTD., in Bangkok, Thailand (current location: Samut Prakan Prefecture) |
| 2001-12 |
Obtained ISO14001 certification (JQA-EM1969) |
| 2005-05 |
Established the 'Japan Toho Chemical Industry Co., Ltd. Shanghai Representative Office' in Shanghai, China |
| 2007-04 |
Acquired the business of the sales and research departments of a subsidiary, Modern Chemical Industry Co., Ltd. |
| 2008-02 |
Expanded electronic information material manufacturing equipment at Chiba Factory |
| 2008-11 |
Reorganized the Shanghai representative office in China and established Toho Trading (Shanghai) Co., Ltd. (currently: consolidated subsidiary) |
| 2009-04 |
Constructed Kashima Factory in Kashima District, Ibaraki Prefecture (Kamisuki City), and started manufacturing surfactants |
| 2010-07 |
Established a subsidiary, Toho Chemical (Shanghai) Co., Ltd., in Shanghai, China (currently: consolidated subsidiary) |
| 2011-06 |
Established a subsidiary, Ezhou Toho Chemical Co., Ltd., in Ezhou City, Guangdong Province, China |
| 2011-07 |
Expansion of surfactant manufacturing equipment at Chiba Factory |
| 2012-03 |
Expansion of electronic information material manufacturing equipment at Chiba Factory |
| 2014-04 |
Start of commercial production by subsidiary Toho Chemical (Shanghai) Co., Ltd. |
| 2014-07 |
Start of commercial production by subsidiary Ezhou Toho Chemical Co., Ltd. |
| 2017-03 |
Addition of refining equipment for electronic information materials at Chiba Factory |
| 2018-03-18 |
Our company celebrated its 80th anniversary on March 18, 2018. We sincerely thank our clients and all related parties for their long-term support and patronage. |
| 2018-03-18 |
Our company celebrated its 80th anniversary on March 18, 2018. |
| 2019-05 |
Addition of refining equipment for electronic information materials at Chiba Factory |
| 2020-07 |
Absorption and merger of subsidiary Toho Chemical Warehouse Co., Ltd. |
| 2020-08 |
Expansion of second-phase production equipment at subsidiary Toho Chemical (Shanghai) Co., Ltd. |
| 2021-12 |
Construction of resin manufacturing plant for electronic information materials at Chiba Factory |
| 2022-04 |
Transition from Second Section to Standard Market due to review of market classification by Tokyo Stock Exchange |
| 2024-03 |
Acquisition of ISO45001 certification (JQA-OH0405) |
