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| HOME > Company Information / Company History |
| May 1934 |
TSURUMI SODA CO.,LTD. was founded and electrolysis soda business was started (capital: 1.5 million yen); president: Komakichi Fukuzawa |
| May 1935 |
Construction of plant completed, operation started (site area 66,000 m2; total floor area 10,400 m2) |
| July 1942 |
Merged with Showa Soda CO.,LTD. (present TOAGOSEI CO.,LTD.) and became Showa Soda Tsurumi plant. |
| July 1943 |
Through joint financing by Showa Soda CO.,LTD. and HODOGAYA CHEMICAL CO.,LTD., Japan Aeronautics and Chemical Industries Ltd. was founded (capital 10 million yen).It was decided to take this day as Foundation Date of the company. |
| December 1945 |
The company was re-named again to TSURUMI SODA CO.,LTD. |
| November 1949 |
All stock of HODOGAYA CHEMICAL CO.,LTD. was transferred to TOAGOSEI CHEMICAL INDUSTRY CO.,LTD. (present TOAGOSEI CO.,LTD.) and capital was increased to 15 million yen under the Corporate Reorganization Law.
Received International Trade and Industry Minister's
award for advanced heat control process of the company. |
| September 1951 |
Started manufacturing and sales of direct synthetic purified hydrochloric acid |
| May 1952 |
Opened Tokyo Sales Office (currently Sales Department) at the headquarters for TOAGOSEI CHEMICAL INDUSTRY CO.,LTD. (currently TOAGOSEI CO.,LTD.). |
| October 1952 |
Started manufacturing and sales of ferric chloride solution. |
| April 1953 |
Startsed manufacturing and sales of flaked caustic soda. |
| June 1954 |
Received International Trade and Industry
Minister's award for excellent achievement of high-pressure gas
plant maintenance and facilities. |
| November 1954 |
Liquefied chlorine process was converted to a high pressure process. |
| October 1957 |
Received Kogyo Gijutsuin President's award for plant standardization and excellence in quality control. |
| March 1959 |
Received International Trade and Industry Minister's award for economical usage of electricity. |
| October 1960 |
Began manufacturing and sales of Tsuruchlone (sodium hypochlorite). |
| August 1961 |
Obtained additional land area of 33,000 m2 through reclamation project of adjacent Tsurumi River |
| October 1961 |
Received fourth International Trade and Industry Minister's award for excellence in heat control. |
| June 1963 |
Started Japan's first manufacturing and sales of liquefied hydrogen chloride in Japan. |
| June 1964 |
Received Japan Soda Industry's Technology award for manufacturing technology of liquefied hydrogen chloride. |
| July 1964 |
Started business of chemical equipments and facilities which include designing manfacturing and installation . |
| October 1965 |
Began manufacturing and sales of Tsuruchlone Super (sodium hypochlorite). |
| September 1969 |
Began manufacturing and sales of compressed hydrogen. |
| October 1973 |
Using company specific technology, new metallic electrode for electrolysis was developed and the conventional graphite electrode was replaced to this electrode. |
| December 1973 |
Obtained approval to commence industrial
waste processing business. |
| May 1975 |
Began manufacturing and sales of Tsuruchlone
N-40 (sodium hypochlorite). |
| April 1976 |
Received Electrochemical association Tanabashi award for development of metallic electrodes. |
| June 1976 |
Received Japan Soda Industry Technology award for development of metallic electrode and improved evaporator of caustic soda solution. |
| September 1977 |
Started manufacturing and sales of Prespander to make a rice hull expanded soft. |
| December 1977 |
Completed quadruple effect evaporator for caustic soda concentration and all electrolysis vessel was converted to and metallic electrodes. |
| February 1978 |
Received the fifth International Trade and Industry Minister's award for excellence of heat control process. |
| January 1979 |
Head office building was renewed. |
| December 1980 |
Received Patent Bureau Director's Incentive award for development of Prespander. |
| March 1982 |
Received Clean Japan Center Chairman Award for contributing to the recycling industry for the second time. |
| December 1982 |
Ion exchange membrane electrolysis
vessel was technically introduced. Started to converted from a
diaphragm process to Ion exchange membrane process. |
| June 1983 |
Started manufacturing and sales of high purity liquefied hydrogen chloride. |
| September 1984 |
Was listed on the Tokyo Stock Exchange (Second Division).
Capital was increased to 830 million yen. |
| January 1990 |
Capital was increased to 2.08 billion yen. |
| December 1990 |
Started manufacturing and sales of
high purity hydrochloric acid solution. |
| July 1997 |
MIHARA TECHNO CO.,LTD. was founded. |
| June 1998 |
Conversion to Ion exchange membrane process was finally completed after 16 years. (6 terms) |
| November 1998 |
Started operation of MIHARA TECHNO CO.,LTD. |
| July 1999 |
ISO9001 was registered |
| December 2000 |
Started manufacturing and sales of Easy-soluble copper oxide (ES CuO). |
| January 2001 |
MIHARA TECHNO CO.,LTD. was consolidated and became Mihara Techno Plant. |
| July 2001 |
Started manufacturing and sales of high purity caustic soda solution (CLEARCUT(R)-S). |
| July 2002 |
Became a full subsidiary of TOAGOSEI CO.,LTD. through exchange of stock and was de-listed from the Tokyo Stock exchange. |
| March 2003 |
ISO 14001 was registered. |
| April 2003 |
A subsidiary company of SANSEI SHOJI CO.,LTD.. was merged into KYOEI SHOJI CO.,LTD. and new company was named to TG Corporation. |
| October 2004 |
A subsidiary company of "TSURUMI SODA KOREA CO.,LTD." was founded in Korea. |
| November 2006 |
Construction of anhydrous hydrogen chloride was started at the TOAGOSEI CO.,LTD. Tokushima Plant was started. |
| October 2007 |
Closed Mihara Techno Plant. |
| May 2008 |
A subsidiary company of "TSURUMI SODA KOREA CO.,LTD." in Korea has changed its company name to "TOAGOSEI KOREA CO.,LTD.". |
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