History
| June 1979 | Gunji Ohnishi founded Ohnishi Electronics in Azuchi-cho, Gamo-gun (now Azuchi-cho, Omihachiman City) in Shiga Prefecture |
| January 1984 | Reorganized as Ohnishi Electronics Co., Ltd. |
|
March 1989 |
Opened Tokyo branch office |
| July 1990 | Opened Ibaraki factory |
| August 1995 | Established Ohnishi Electronics (M) Sdn. Bhd. in Malaysia |
| April 1997 | Construction completed on headquarters building |
| January 2001 | Acquired ISO 9002 certification (Headquarters: Manufacture and sales of test jigs for printed wiring boards) |
| July 2002 |
Established Ohnishi Electronics (Kunshan) Co., Ltd. in China |
| November 2002 |
Acquired ISO 14001 certification (Headquarters) |
| November 2003 | Transitioned to ISO 9001 certification (Headquarters: Manufacture and sales of test jigs for printed wiring boards) |
| December 2010 | Junichi Ohnishi becomes second company president |
| February 2012 | Established Ohnishi Electronics (T) Co., Ltd. in Thailand |
| December 2016 | Expanded ISO 9001 certification (Tokyo branch office: Sales of test jigs for printed wiring boards) |
| January 2018 |
Established Ohnishi Electronics (V) Co., Ltd. in Vietnam |
| June 2019 |
40th anniversary of founding of company |
| June 2021 |
Renewed Ohnishi Electronics’ SDGs declaration and website |