|1971||September 1||Joji Otsuka established a private firm as Otsuka diemaking in Higashi-Osaka city.|
|1974||March 10||Relocated to Osaka city for business expansion.|
|1979||February 1||Incorporated Otsuka dieboard CO.,LTD. by increasing the capital 4,800,000 Yen.
Joji Otsuka is appointed as President.
|1982||April 15||Established SOEI as an affiliated company to promote G-Tape.|
|1985||July 14||Relocated to DAITO city for expanding the productions.|
|1986||October 1||Increased the capital to 15,000,000 Yen.|
|1988||July 1||Incorporated DAISO CO., LTD. by integrating Otsuka dieboard CO., LTD. and SOEI.|
|1988||October 1||Increased the capital to 24,000,000 Yen.|
|1991||April 13||The 1st diecutting technical seminar (attended by 50 people 30 companies).|
|1991||September 1||The 20th Anniversary (attended by 80guests).|
|1993||December 15||Increased the capital to 36,000,000 Yen.|
|1994||March 1||Opened Kyushu factory.|
|1996||September 1||Opened Kanagawa factory.
The 25th Anniversary.
|2000||September 1||GS department relocated to the new location to expand G-tape productions.|
|2001||May 1||Opened Tokyo factory.|
|2005||June 1||Opened Chubu office.|
|2006||September 1||Head office and GS department relocated to the new location.|
|2006||September 8||The 35th Anniversary.|
|2009||October 1||Osaka factory relocated to the new location for production expansion.|
|2011||June 3||The 40th Anniversary.|
|2011||July 1||Masakazu Otsuka is appointed as President.|
|2012||June 21||Kanagawa factory relocated to the new location for production expansion.|
|2013||March 3||DAISO was given the award.
Kansai area IT(Information Technology) 100 Company Award
|2014||January 1||Redesigned corporate logo.|
|2015||November 20||Chubu office relocated to the new location.|
|2017||September 29||DAISO was given the award.
Osaka Manufacturing Best-in-Class Award 2017
|2022||April 15||Capital alliance with TDS CO., LTD.|