1940s to 1970s
- October 1947
- Established in Moji-shi (currently Moji-ku, Kitakyushu-shi) by company officials of the former Mitsubishi Corporation, which was dissolved before the establishment
- October 1961
- Listed shares on the First Section of the Tokyo Stock Exchange
- January 1974
- Established the subsidiary Seika Sangyo GmbH, Germany (Dusseldorf)
1980s
- April 1981
- Shifted to a two-headquarters system (Tokyo Headquarters and Kitakyushu Headquarters)
- May 1983
- Opened the Taipei Branch in Taiwan (Taipei)
- August 1983
- Transferred the operations of the Kitakyushu headquarters to the Tokyo headquarters and registered the Kitakyushu headquarters as the head office
- November 1983
- Established Tsurumi (Europe) GmbH, a joint venture with Tsurumi Manufacturing Co., Ltd. in Germany (Dusseldorf)
1990s
- December 1990
- Changed the registered head office from Moji-ku Kitakyushu to Kokurakita-ku Kitakyushu
- April 1994
- Established the subsidiary Seika Machinery Inc., USA (Los Angeles)
- August 1994
- Osaka Branch office moved from Umeda, Kita-ku to Dojimahama, Kita-ku
2000s
- July 2000
- Opened the Seoul Branch in Korea (Seoul)
- August 2001
- Changed registered head office from Kokurakita-ku Kitakyushu to Chiyoda-ku, Tokyo
- January 2004
- Established the subsidiary SEIKA (SHANGHAI) CO., LTD. in China (Shanghai)
- April 2005
- Acquired 100% ownership of JAPAN DAIYA VALVE Co.,Ltd.
- April 2006
- Opened an Atlanta Office as a branch of Seika Machinery Inc.USA
- September 2006
- Subsidiary Nippon Daiya Valve Co., Ltd. established TIANJIN DAIYA VALVE CO., LTD. in Tianjin, China
- August 2008
- Established TEN FEET WRIGHT INC.
- January 2009
- Acquired 100% ownership of Compagnie Europeenne Afrique Asie S.A.S.
2010s
- April 2012
- Established SEIKA DIGITAL IMAGE CORPORATION
- October 2012
- Acquired 100% ownership of HYDREUTES,S.A.U.
- December 2012
- Established the subsidiary Seika Sangyo (Thailand) Co., Ltd. in Thailand (Bangkok)
- November 2014
- Established Tsurumi Pompes Location S.A.S.
- February 2015
- Acquired 100% ownership of Marine Motors & Pumps N.V. in Belgium
- April 2015
- Opened an San Francisco Office as a branch of Seika Machinery Inc.USA
- May 2015
- Established Meinan Kyodo Energy
- March 2016
- Acquired 100% ownership of Shikishimakiki Corporation
- October 2017
- Created the Group logo on the 70th anniversary of the Company
- December 2018
-
Established the subsidiary SEIKA SANGYO (VIETNAM)
COMPANY LIMITED in VIETNAM（Ho Chi Minh）
SEIKA MACHINERY, INC. San Francisco Office (right)
2020s
- January 2020
- Obart Pumps (Holdings) Limited (currently a consolidated subsidiary) and Obart Pumps Limited (currently a consolidated subsidiary) are made into subsidiaries through the acquisition of shares through the local subsidiary Tsurumi (Europe) GmbH.
- January 2020
- Merged Tsurumi Pompes Location S.A.S. and COMPAGNIE EUROPEENNE AFRIQUE ASIE S.A.S. and changed the trade name to Tsurumi France S.A.S. (consolidated subsidiary)
- October 2020
- Established Seika Daiya Engine Co.,Ltd.
- April 2022
- Formulated VIORB 2030, our long-term management vision from FY 2022 to FY 2030
- April 2022
- Listed on the Prime Market of Tokyo stock Exchange
- June 2022
- Transition to a company with an Audit and Supervisory Committee
- May 2023
- Acquired 100% ownership of TVE Co., Ltd.
- November 2023
- Established FORMOSA SEIKA CORPORATION in Taiwan (Taipei)
- April 2024
- Acquired 100% ownership of Shipyard Tanaka Co.,Ltd.
Minami-Kyushu Branch of Seika Daiya Engine Co., Ltd. (right)