History
| 1971 | September 1 | Joji Otsuka established a private firm as Otsuka Diemaking in Higashi-Osaka city. |  |
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| 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. |
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| 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. |
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| 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 |
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| 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 |
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| 2022 | April 15 | Capital alliance with TDS CO., LTD. |  |
| 2022 | July 1 | Capital alliance with DAISO TAKARA CO., LTD. |  |
| 2025 | november 1 | Opened Tokyo office. |  |
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