| Ando Corporation |
Nishihara Environmental Sanitation Research Co. |
| Chiyoda Corporation |
Nishinippon Plant Engineering |
| Chugai Ro Co., Ltd. |
Nissan Construction Co., Ltd. |
| Dai Nippon Construction Co. |
NTT Me Kansai Corporation |
| Ebara Plant Construction Co., Ltd. |
NTT Telecom Engineering Chugoku Corp. |
| Ericsson Toshiba TCS. K·K， |
OAC Architects Planners Engine |
| Fujita Corporation |
Ohbayashi Corporation |
| Fukuda Corporation |
Onoda Chemico Co., Ltd. |
| Haseko Corporation |
Onoda Engineering Co, Ltd. |
| Hazama Corporation |
P.S. Corporation |
| IHI Plantech Co., Ltd. |
Penta-Ocean Construction Co., Ltd. |
| Ishimoto Architectural & Eng. |
Raymond Architectural Design |
| Japan Development & Construction |
Sangetsu Co., Ltd. |
| JGC Corporation |
Schal Bovis, Inc. |
| K. Itow Architects & Engineers |
Shimizu Corporation |
| K. Mori Architect Inc. |
Sumitomo Construction Co. |
| Kajima Corporation |
Sumitomo Densetsu Co., Ltd. |
| Kandenko Co.，Ltd. |
Sumitomo Forestry Co., Ltd. |
| Kansai International Airport Company, Ltd. |
Systems Engineering Consultants Co., Ltd. |
| Kinden Corporation |
Taihei Kogyo Co., Ltd. |
| Koyo Iron Works & Construction Co., Ltd. |
Taisei Corporation |
| Kume Sekkei Co.，Ltd. |
Takenaka Komuten Co., Ltd. |
| Kyudenko Corporation |
Tekken Construction Co., Ltd. |
| Lafarge(法国拉法基) |
The Nippon Road Co., Ltd. |
| Marubeni Setsubi Corporation |
Toa Corporation |
| Matsuda，Hirata&Sakamoto，Arch |
Tobishima Corporation |
| Misawa Homes Co.，Ltd. |
Toda Construction Co., Ltd. |
| Mitsubishi Chemical Engineering Corporation |
Tohoku Electric Power Engineering & Construction |
| Mitsubishi Heavy Industries Erection Co., Ltd. |
Tokyo Denki Komusho Co., Ltd. |
| Mitsui Construction Co., Ltd. |
Tokyo Electric Power Service |
| Modec, Inc. |
Tokyo Engineering Consultants |
| Nagasaki Semmpaku Sobi Co.，Ltd. |
Tokyu Construction Co., Ltd. |
| Nihon Architects, Engineers |
Toyo Tsusin Kogyo Co., Ltd. |
| Nikken Sekkei，Ltd. |
Yachiyo Engineering Co., Ltd. |
| Ericsson |
Yamashita Architects & Eng. |
| Nippon Hodo Co., Ltd. |
Yokogawa Johnson Controls Corporation |
| Nippon Koei Co.，Ltd. |
Yurtec |
