- ASAHI KASEI CORPORATION
- Asahi Mutual Life Insurance Co.
- Iwatani Corporation
- OBAYASHI CORPORATION
- KAJIMA CORPORATION
- KANEKA CORPORATION
- THE KANSAI ELECTRIC POWER CO., INC.
- Canon Marketing Japan Inc.
- KYUSHU ELECTRIC POWER CO.,INC.
- Kyowa Hakko Kirin Co., Ltd.
- KIRIN HOLDINGS COMPANY, LIMITED
- KURIBAYASHI STEAMSHIP CO., LTD.
- KURIMOTO,LTD.
- KUREHA CORPORATION
- KDDI CORPORATION
- Komatsu Ltd.
- SANKI ENGINEERING CO., LTD.
- SANDEN CORPORATION
- SHIKOKU ELECTRIC POWER CO., INC.
- JX Holdings, Inc.
- JNC Corporation
- SUMITOMO BAKELITE CO., LTD.
- Suruga Bank Ltd.
- SEIKO HOLDINGS CORPORATION
- SOHGO SECURITY SERVICES CO., LTD.
- Sony Corporation
- Takasago Thermal Engineering Co., Ltd.
- Takeda Pharmaceutical Company Limited
- THE DAI-ICHI LIFE INSURANCE COMPANY, LIMITED
- The Chugoku Electric Power CO.,Inc.
- Electric Power Development Co., Ltd
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- DENSO CORPORATION
- DENTSU INC.
- Tokyu Land Corporation
- TOKYO BOEKI LTD.
- Tohoku Electric Power Company, Incorporated
- TOPY INDUSTRIES, LIMITED
- TOYOTA INDUSTRIES CORPORATION
- TOYOTA TSUSHO CORPORATION
- The Nisshin OilliO Group, Ltd.
- NGK INSULATORS, LTD.
- NIPPON SHOKUBAI CO., LTD
- NIPPON SUISAN KAISHA, LTD
- The Japan Steel Works,Ltd.
- NIPPON EXPRESS CO., LTD.
- Nippon Telegraph And Telephone Corporation
- NIPPON YUSEN KABUSHIKI KAISHA
- Nomura Holdings, Inc.
- Hakuhodo DY Holdings Inc.
- HANWA CO., LTD.
- Hitachi Chemical Co., Ltd.
- Hitachi High-Technologies Corporation
- Huawei Technologies Co., Ltd.
- Hokuriku Electric Power Company
- Hokkaido Electric Power Co.,Inc.
- Honda Motor Co., Ltd.
- MITSUI SUGAR CO., LTD.
- MITSUBISHI KAKOKI KAISHA LTD.
- MITSUBISHI ESTATE CO., LTD.
- Mitsubishi Research Institute,Inc.
- LION CORPORATION
- RICOH COMPANY, LTD.
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