| 1985 |
Shinano System Engineering Inc., which became the starting point of TandS Group, is established. |
| 1996 |
Tech Japan Inc. is established. |
| 2016-11 |
TandS Inc. is established through the merger of Tech Japan Inc. and Shinano System Engineering Inc., with headquarters in Nishi-ku, Yokohama, Kanagawa, and the Yokohama Development Center in Kanagawa-ku, Yokohama. |
| 2017-11 |
The Yokohama Development Center is integrated into the headquarters to improve operational efficiency. |
| 2018-03 |
TandS Inc. headquarters acquires ISO/IEC 27001. |
| 2018-04 |
A new business promotion department is organized to promote Artificial Intelligence (AI). |
| 2018-06 |
A new office is opened in Yokkaichi. |
| 2019-07 |
A new office is opened in Kitakami. |
| 2019-07 |
A joint research contract is signed with the Tohoku University International Integrated Electronics Research and Development Center. |
| 2020-08 |
Listed on the Tokyo Stock Exchange Mothers Market. |
| 2020-10 |
A new office is opened in Totsuka. |
| 2020-12 |
A new R&D center is established for research and development. |
| 2022-07 |
A new office is opened in Kumamoto. |
| 2023-04 |
A new office is opened in Nagasaki. |
| 2024-01 |
Established as T&S Split Preparation Corporation in January 2024. |
| 2024-05 |
A new office is opened in Nagoya. |
| 2024-06 |
The company name is changed from TandS Inc. to TandS Group Inc. |
| 2024-06 |
TS System Solutions Inc. is established as a 100% owned subsidiary. |
| 2024-06 |
In June 2024, succeeded the system development and related services business through a split from the parent company, T&S Group Corporation, and changed the trade name from T&S Split Preparation Corporation to T&S Corporation. |
| 2024-11 |
Established InFour Corporation as a 100% owned subsidiary. |
| 2025-01 |
Made Extendage Corporation a subsidiary. Established Kinoshita Hiro Public Accountant Office. |
| 2025-04 |
In April 2025, succeeded the AI software development related business to InFour Corporation through absorption-type split. |
