| IWAFUJI INDUSTRIAL CO.,LTD. |
EIWA CORPORATION |
| EBARA ENVIRONMENTAL PLANT CO.,LTD. |
Ebara Jitsugyo Co., Ltd. |
| Ebarashoji Co.,Ltd. |
Ebara Corporation |
| OBAYASI CORPORATION |
OVAL Corporation |
| OKAYA & CO., LTD. |
ORGANO PLANT SERVICE CORPORATION |
| Kakoki Plant & Environment Engineering Co., Ltd. |
KANTO TEK Co., Ltd. |
| KUREHA ENGINEERING CO.,LTD. |
Shinko Plantech Co., Ltd. |
| Shinryo- Kougyo Co.,Ltd. |
Swing Corporation |
| Suiki Technos, LTD. |
Seika Corporation |
| CHIYODA Corporation |
Chiyoda System Technologies Corporation |
| TSUKISHIMA KIKAI CO.,LTD. |
TSUKISHIMA Technology Maintenance Service CO.,LTD. |
| Toray Engineering Co.,Ltd. |
Drico, Ltd. |
| JGC Corporation |
JGC PLANT INNOVATION CO., LTD. |
| NIPPONN AUTOMATIC CONTROL COMPANY |
Nippon Dry-Chemical CO., LTD. |
| Hitachi, Ltd. |
Mizota co.,ltd. |
| Mitsubishi Kakouki kaisha,ltd |
Mitsubishi Heavy Industries Environmental & Chemical Engineering Co., Ltd. |
| Mitsubishi Heavy Industries, Ltd. |
YAZAWA FERROMITE CO.,LTD. |
| JFE Engineering Corporation |
|
