| 1986-06 |
Established Shoden Corporation in Minato-ku, Tokyo, for the purpose of energy conservation business. Engaged in guaranteed energy-saving projects to reduce energy consumption. |
| 1986-06-09 |
Established. |
| 1997-02 |
Participated in the Eco-Systems Business Introduction Study Group of the Foundation for Promoting Eco-Energy. |
| 1998-06 |
Launched sales of in-house developed product "Eco Step" (electronic ballast for CPU-level dimming fluorescent lamps). |
| 2001-04 |
Joined the Eco Promotion Council as a full member. |
| 2002-12 |
Expanded energy reduction proposal capabilities for Eco Business (water saving). |
| 2003-02 |
Opened Kansai Office in Osaka City, Osaka Prefecture. |
| 2004-02 |
Expanded energy reduction capabilities for Eco Business (small hydroelectric power systems). |
| 2004-12 |
Listed on the Tokyo Stock Exchange Mothers Market. |
| 2005-12 |
Signed a business alliance agreement with Recycle One Corporation (now Renova Inc.). |
| 2006-12 |
Relocated headquarters to Chuo-ku, Tokyo. |
| 2007-04 |
Established Guam Branch as a sales base in Guam. |
| 2008-06 |
Signed a business alliance agreement with Energy Advance Corporation (now Tokyo Gas Engineering Solutions Corporation). |
| 2009-06 |
Relocated headquarters to Minato-ku, Tokyo. |
| 2010-11 |
Launched sales of LED fluorescent tube "LED Fresh". |
| 2010-11 |
Launched sales of LED fluorescent tube "LED Fresh". |
| 2011-12 |
Established 100% subsidiary Dry-E Corporation (now Shoden Corporation) to promote renewable energy business. |
| 2011-12-01 |
Established. |
| 2012-12 |
Entered the solar power EPC business. |
| 2013-10 |
Implemented a 2-for-1 stock split, with a trading unit of 100 shares. |
| 2013-10 |
Split stocks at a ratio of 1 share to 200 shares. Adopted a unit share system with a trading unit of 100 shares to also make 100 shares one unit. |
| 2014-05 |
Increased capital to 873 million yen. |
| 2014-06-04 |
Established. |
| 2015-08 |
Changed market to the Second Section of the Tokyo Stock Exchange. |
| 2015-08 |
Changed market to the Second Section of the Tokyo Stock Exchange. |
| 2016-09 |
Signed a sales agency agreement regarding PKS exports with Malaysia's SAID company. |
| 2017-01 |
Started solar power plant maintenance business through interconnection with Toshiba IT Service Corporation and NTT Smile Energy. |
| 2017-01 |
Started solar power plant maintenance business through interconnection with Toshiba IT Service Corporation and NTT Smile Energy. |
| 2017-05 |
Changed trade name to "Setuden Corporation Holdings". |
| 2017-06 |
Changed the trade name of a consolidated subsidiary. |
| 2017-12 |
Signed a business alliance agreement with Marubeni Corporation. |
| 2018-12 |
Entered into a business agreement with ISO certification body. |
| 2021-08 |
Changed trade name to "SDS Holdings Corporation". |
| 2021-09 |
Signed a business alliance agreement with Nagoya Hygiene Bacteria Technology Center in the HACCP business. |
| 2022-04 |
Acquired 70% of Yellow Capital Orchestra Co., Ltd., and made it a subsidiary. |
| 2023-06-05 |
Established. |
| 2024-04-23 |
Established. |
| 2024-05-14 |
Establishment |
