History
DKK was founded in 1956
At that time, zirconium was not a well understood element and had limited applications. Our young founders saw the potential of zirconium and took on the task of bringing out its possibilities. “Because no one has done it, we will do it.” They founded DKK with a spirit of undertaking challenges.
Establishment – 1970s
| 1956 | DAIICHI KIGENSO KAGAKU KOGYO CO., LTD. established |
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| 1959 | Opened the Osaka Sales Office in Higashi-ku, Osaka |
| 1960 | Opened the Yodogawa Plant No. 1 in Higashiyodogawa-ku, Osaka |
| 1961 | Started sale of optical zirconia |
| 1966 | Opened the Yodogawa Plant No. 2 |
| 1967 | Opened the Itami Plant in Itami, Hyogo |
| 1968 | Started the sale of zirconia for electronic materials and flame retardants for resins |
| 1969 | Opened the Tokyo Office (now Tokyo Sales Office) in Kita-ku, Tokyo Started the full-scale sale of zirconia for refractories |
| 1972 | Started the sale of zirconia for brakes |
| 1976 | Started the sale of cesium nitrate for optical lenses Started the sale of zirconia for oxygen sensors |
| 1979 | Established a new site on the premises of the Head Office (now R&D Center) in Suminoe, Osaka and integrated the three existing plants into it |
1980 – 1990s
| 1980 | Started the full-scale sale of electromelting zirconia for continuous casting of steel |
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| 1981 | Started the sale of zirconia for fine ceramics |
| 1983 | Relocated the Tokyo Sales Office to Minato-ku, Tokyo |
| 1984 | Established affiliated company, NewTechs Co., Ltd. |
| 1990 | Started the sale of ceria-zirconia composite oxides for automotive catalyst applications |
| 1993 | Established I.D.U. Co., Ltd. (now a non-equity method affiliate) in Kochi |
| 1996 | Obtained IS0-9001 certification Established the Gotsu Site in Gotsu, Shimane |
2000 – present
| 2001 | Obtained IS0-14001 certification |
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| 2002 | elocated the Osaka Sales Office to Chuo-ku, Osaka Absorbed affiliate New Techs Co., Ltd. |
| 2004 | Listed on the Second Section of the Tokyo Stock Exchange |
| 2006 | Established the Fukui Site in Fukui |
| 2012 | Established VIETNAM RARE ELEMENTS CHEMICAL JOINT STOCK COMPANY (now a consolidated subsidiary) in Ba Ria Vung Tau Province, Socialist Republic of Vietnam |
| 2013 | Established subsidiary Suihua Shanghai Trading Company Limited (now consolidated subsidiary DKK (Shanghai) Materials Trading Co., Ltd.) in Shanghai, China |
| 2014 | Established equity-method affiliates Shandong Guangyin DKK New Materials Co., Ltd. and Shandong Guangyin DKK Environment Technology Co., Ltd, in Shandong Province, China |
| 2017 | Established DKK Logistics Corporation (now a consolidated subsidiary) |
| 2018 | Established DKK Thai Materials Trading Co., Ltd. (now a consolidated subsidiary) in Bangkok, Thailand Listed on the First Section of the Tokyo Stock Exchange |
| 2019 | Relocated the Head Office to Chuo-ku, Osaka Established subsidiary, DKK America Materials, Inc. (now a consolidated subsidiary) in Michigan, USA |
| 2021 | Relocated the Tokyo Sales Office to Chiyoda-ku, Tokyo |
| 2022 | Transitioned to the Prime Market of the Tokyo Stock Exchange Stated medium-term management plan ‘DK-One Next’ |
| 2023 | Established an R&D Center in Suminoe-ku, Osaka |
