| Date | Description |
|---|---|
| 2019-12-09 | delete president Mr. Yoshihisa Aono |
| 2019-12-09 | insert president Teppei Sato |
| 2019-12-09 | delete person Mr. Yoshihisa Aono |
| 2019-12-09 | insert person Teppei Sato |
| 2015-09-21 | delete president Mr. Shinya Hata |
| 2015-09-21 | insert president Mr. Yoshihisa Aono |
| 2015-09-21 | delete person Mr. Shinya Hata |
| 2015-09-21 | insert person Mr. Yoshihisa Aono |