| Date | Description |
|---|---|
| 2021-08-21 | delete president MR. YASUO SHIMIZU |
| 2021-08-21 | insert president MR. YUTAKA MINAGAWA |
| 2021-08-21 | delete person MR. YASUO SHIMIZU |
| 2021-08-21 | insert person MR. YUTAKA MINAGAWA |
| 2015-12-09 | delete president MR. MAKOTO TAKAOKA |
| 2015-12-09 | insert president MR. YASUO SHIMIZU |
| 2015-12-09 | delete person MR. MAKOTO TAKAOKA |
| 2015-12-09 | insert person MR. YASUO SHIMIZU |
| 2015-06-21 | insert person MR. HIRANO |