1938 Incorporates with capital of \4 million to manufacture metallic magnesium, caustic soda and hydrochloric acid.
1939 Starts producing metallic magnesium and caustic soda at the Shibukawa Plant.
1945 Ceases producing metallic magnesium and starts manufacturing inorganic chemicals with caustic soda as the main product line.
1950 Launches production of trichloroethylene.
1951 Lists stock on the over-the-counter market.
1952 Begins producing perchloroethylene.
1956 Starts producing cyclohexanone and cyclohexanol.
1960 Opens Osaka sales office(branch office now).
1961 Lists stock on the Second Section of the Tokyo Stock Exchange.
1962 Opens Nagoya sales office.
1963 Lists stock on the First Section of the Tokyo Stock Exchange.
1965 Inaugurates Mizushima Plant.
1967 Starts producing 1,1,1-trichloroethane and vinylidene chloride.
1970 Introduces first hydrofluoric acid electrolysis technologies to Japan.
Launches production of sodium hypochlorite.
1971 Begins producing sulfur hexafluoride and aluminum chloride.
1977 Commences producing reprographics carriers.
1979 Begins production of magnetic alloy powders and iodine pentafluoride.
1981 Starts producing carbon tetrafluoride.
1983 Launches production of trifluoromethane.
1984 Commences producing octafluoropropane.
1986 Commences production of tungsten hexafluoride.
Completes switchover at Shibukawa and Mizushima plants to new ion-exchange membrane cell method of electrolytic caustic soda production from mercury cell method.
1987 Initiates production of nitrogen trifluoride.
1988 Starts producing ferrite carriers and magnetite for pigments.
1989 Begins producing silicon tetrafluoride and hexafluoroethane.
Initiates sales of Kanden Dry chlorinated solvents for drying agents.
1995 Obtains ISO 9002 certification for five fluorochemical products at the Shibukawa Plant.
1997 Begins producing chlorine trifluoride.
Installs new hydrofluoric acid electrolytic equipment at the Mizushima Plant.
Starts producing lithium hexafluorophosphate.
1998 Obtains ISO 9002 certification for the Mizushima plants.
1999 Obtains ISO 14001 certification for the Mizushima plants.
2000 Obtains ISO 9001 certification for the Shibukawa and Mizushima plants.
Establishes Kanto Denka Korea Co.,Ltd.
2002 Establishes Taiwan Representive Office.
2004 Establishes Taiwan Kanto Denka Co.,Ltd .
2005 Ceases producing magnetic alloy powders.
Shibukawa Plant withdraws from soda electrolyte business, which is transferred to a single-factory system at the Mizushima Plant.
Launches hexafluoro-1,3-butadiene.
2010 Launches Monofluoromethane and Carbonyl sulfide.
2011 Establishes Kanto Denka Kogyo(Shanghai)Co.,Ltd.
2017 Launches Lithium Tetrafluoroborate
Establishes Kanto Denka Fine Products KOREA Co., Ltd.
2018 Opens Taiwan Kanto Denka Co.,Ltd.(Singapore Branch)
2020 Establishes Xuancheng KDK Technology Co., Ltd.
2022 Transits to the Prime Market of the Tokyo Stock Exchange.