| Company Name | Main Body | GEC | SEC |
|---|
| HAZAMA ANDO CORPORATION | ● | ● | ● |
| Kajima CORPORATION | ● | ● | ● |
| Penta-ocean Construction Co., Ltd. | ● | | ● |
| SHIMIZU CORPORATION | ● | ● | ● |
| Taisei Corporation | ● | ● | ● |
| TAKENAKA CORPORATION | ● | ● | ● |
| TODA CORPORATION | ● | ● | ● |
| FUJI P.S CORPORATION | ● | | |
| Fujita Corporation | ● | | |
| FUKADA SALVAGE & MARINE WORKS CO.,LTD | ● | | |
| KONOIKE CONSTRUCTION CO.,LTD. | | ● | |
| Kumagai Gumi Co.,Ltd. | ● | ● | |
| MAEDA CORPORATION | ● | ● | |
| Nishimatsu Construction Co.,Ltd. | ● | ● | |
| OBAYASHI CORPORATION | ● | ● | |
| OKUMURA CORPORATION | ● | ● | |
| SATO KOGYO CO.,LTD. | ● | ● | |
| Sumitomo Mitsui Construction Co., Ltd. | ● | ● | |
| TAKENAKA CIVIL ENGINEERING & CONSTRUCTION CO.,LTD. | ● | ● | |
| TEKKEN CORPORATION | ● | ● | |
| TOA CORPORATION | ● | | |
| Tokyu Construction Co., Ltd. | ● | ● | |
| Toyo Construction Co.,Ltd. | ● | | |
| YOSHIDA-GUMI Corporation | ● | | |
