| | |
| | In alphabetical order |
| ARAKAWA CHEMICAL INDUSTRIES., LTD. | BRIDGESTONE CORPORATION | DAIKIN INDUSTRIES, LTD. |
| DAISO CO., LTD. |
EBARA CORPORATION |
FUJI XEROX CO., LTD. |
| FUJITSU LTD. |
FURUKAWA NETSUGAKU ENGINEERING CO., LTD. |
HONDA MOTOR CO., LTD. |
| ITOKI CO., LTD. |
KAJIMA CORPORATION |
KANEKA CORPORATION |
| KINDEN CORPORATION |
KIRIN BREWERY CO., LTD. |
KOMATSU LTD. |
| KUREHA CHEMICAL INDUSTRY CO., LTD. |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
MIURA CO., LTD. |
| NATIONAL HOUSE INDUSTRIAL CO., LTD. |
NEW OJI PAPER CO., LTD. |
NIPPON ELECTRIC GLASS CO., LTD. |
| NIPPON KEORI KAISHA LTD. |
NIPPON PAINT CO., LTD. |
NIPPON SHINYAKU CO., LTD. |
| NITTO SEIKO CO., LTD. |
OBAYASHI CORPORATION |
ORGANO CORPORATION |
| RICHO COMPANY LTD. |
SAKURA COLOR PRODUCTS CORP. |
SANYO ELECTRIC CO., LTD. |
| SEKISUI CHEMICAL CO., LTD. |
SENKO CO., LTD. |
SHIMIZU CORPORATION |
| SUMITOMO DENSETSU CO., LTD. |
SUMITOMO ELECTRIC INDUSTRIES, LTD. |
SUZUKI MOTOR CORPORATION |
| TAISEI CORPORATION |
TAKASE SEN PLANT CO., LTD. |
TAKENAKA CORPORATION |
| TAKIRON CO., LTD. |
THE GREEN CROSS CORPORATION |
TOYO CONSTRUCTION CO., LTD. |
