| 1905 | August | Densaku Kuroita founded Tokyo Tsukishima Kikai Seisakusho. |
|---|---|---|
| 1917 | May | Tsukishima Kikai Co.,Ltd. incorporated |
| 1937 | September | Second Tsukishima Kikai Co.,Ltd.in Tsuruki-ku Yokohama City merged. |
| 1944 | March | The company merged with Tsukishima Kikai Chuko Co., Ltd. |
| 1949 | May | Stock listed on the Tokyo Stock Exchange. |
| 1961 | September | Stock listed on the Second Section of the Osaka Securities Exchange. |
| October | A laboratory built within the Tsukudajima Factory to strengthen research and development. | |
| 1962 | April | Tsukishima Kikai Engineer Training Center created. |
| 1976 | January | Ichikawa Factory began its operations. |
| 1977 | July | Ichikawa Factory acquired the ASME (American Society of Mechanical Engineers) certificate. |
| 1991 | February | TSK Engineering Malaysia Sdn. Bhd. was founded. |
| 1993 | April | TSK Engineering Thailand Co., Ltd. was founded. |
| 1994 | November | TSK Engineering Taiwan Co., Ltd. was founded. |
| 1995 | Kanuma Environment Beautification Center was founded. | |
| 1996 | October | The company acquired ISO9001. |
| 2000 | June | The company acquired ISO14001. |
| October | Environment Process Development Center was newly established at 6-chome, Koya Shinmachi, Ichikawa-shi, Chiba. | |
| December | Tsukishima Techno Maintenance Service Co., Ltd., a company whose parent organization is Tsukishima Maintenance Co., Ltd., was founded. | |
| 2001 | December | Tsukishima Techno Machinery Co., Ltd. was founded within Ichikawa factory. |
| 2003 | June | Japan’s largest electron beam welding facility was newly installed at Ichikawa factory. |
| December | Tsukishima Techno Solution Co., Ltd. was founded within Ichikawa factory. Kanuma Environment Beautification Center changed its name to “SUN ECO THERMAL.” |
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| 2005 | March | The company acquired the management authority of Nittetu Chemical Engineering Ltd. The name of Nittetu Chemical Engineering Ltd. was changed to “Tsukishima Nittetsu Chemical Engineering Ltd.” |
| 2006 | April | The name of Tsukishima Nittetsu Chemical Engineering Ltd. was changed to “Tsukishima Kankyo Engineering Ltd.” |
