Joji Otsuka established a private firm as Otsuka Diemaking in Higashi-Osaka city.

Relocated to Osaka city for business expansion.

Incorporated Otsuka Dieboard CO.,LTD. by increasing the capital 4,800,000 Yen. Joji Otsuka is appointed as President.

Established SOEI as an affiliated company to promote G-Tape.

Relocated to DAITO city for expanding the productions.

Increased the capital to 15,000,000 Yen.

Incorporated DAISO CO., LTD. by integrating Otsuka dieboard CO., LTD. and SOEI.

Increased the capital to 24,000,000 Yen.

The 1st diecutting technical seminar (attended by 50 people 30 companies).

The 20th Anniversary (attended by 80 guests).

Increased the capital to 36,000,000 Yen.

Opened Kyushu factory.

Opened Kanagawa factory. The 25th Anniversary.

GS department relocated to the new location to expand G-tape productions.

Opened Tokyo factory.

Opened Chubu office.

Head office and GS department relocated to the new location.

The 35th Anniversary.

Osaka factory relocated to the new location for production expansion.

The 40th Anniversary.

Masakazu Otsuka is appointed as President.

Kanagawa factory relocated to the new location for production expansion.

DAISO was given the award. Kansai area IT (Information Technology) 100 Company Award.

Redesigned corporate logo.

Chubu office relocated to the new location.

DAISO was given the award. Osaka Manufacturing Best-in-Class Award 2017.

Capital alliance with TDS CO., LTD.

Capital alliance with DAISO TAKARA CO., LTD.

Opened Tokyo office.