| 1958 | Sankyosha , Established at Akihabara, Tokyo |
|---|---|
| 1979 | The capital increased to 10 million yen. |
| 1986 | Distributor agreement with Seiko instruments. |
| 1997 | Distributor agreement with Seiko Epson. |
| 1998 | The capital increased to 30 million yen. |
| 2002 | The capital increased to 300 million yen. |
| 2003 | Distributor agreement with Molex. |
| 2003 | Sankyosha（H.K.）Co,Ltd. established in Hong Kong. |
| 2005 | Opened Osaka branch. |
| 2007 | Distributor agreement with Linear Technology. |
| 2008 | Opened Nagoya branch. |
| 2011 | Obtained ISO14001（JQA-EM6712） Certification. |
| 2012 | Sankyosha（singapore.）Co,Ltd. established in Singapore. |
| 2014 | Opened Nagano branch. |
| 2016 | Best Distributor of The Year 2016 Award from Linear Technology Japan. |
| 2017 | 60th anniversary |
| 2018 | Distributor agreement with Analog Devices |