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Dec. 1967 Daiichi Calculation Company is established with an initial capital of 1 million yen.
Jul. 1974 The company’s name is changed to Daiichi Computer Resource Co., Ltd. Capital is increased to 3 million yen.
Oct. 1980 Daiichi System Engineering Co., Ltd. separates from Daiichi Computer Resource Co., Ltd. and is established with a starting capital of 5 million yen.
Oct. 1984 DSE begins its design of airplanes and space appliances.
Apr. 1986 Capital increased to 10 million yen.
1987 Opened Komaki office.
Opened Atsuta office.
Mar. 1988 Capital increased to 20 million yen.
Jun. 1989 Capital increased to 50 million yen.
Apr. 1991 Opened Oye office.
Apr 1998 Opened Kariya office.
2003 Opened Utsunomiya office.
Opened Toyota office.
Dec. 2004 Obtained ISO9001 Quality Management System Certification.
Sep. 2005 Head office relocated to Nishiki, Nagoya city.

Opened Shiga office.
Capital increased to 90 million yen.
Opened Gifu office.
Oct. 2007 Opened Meiyu office.
Oct. 2008 Nagoya Technology Center opened and merged with Atsuta office.
Aug. 2009 Nagoya Technology Center is further expanded and merged with Komaki and Toyota offices.
Nov. 2013 DSE takes a stake in Thai DCR Co., Ltd., Thailand.
Oct. 2014 Opened Komaki office.
Jan. 2017 Moved Komaki office.
Jul. 2017 Moved head office. (Merged with Nagoya Technology Center.)
Nov. 2021 Obtained ISO13485 Medical devices – Quality Management System Certification.
Jan. 2023 Moved Gifu office. (Merged with Oye office.)
Feb. 2024 Obtained ISO27001 Information Security Management System Certification.