Ides Inc.

Asia Air Survay Co., Ltd.

IDEA Consultants, Inc.

Eight-Japan Engineering Consultants Inc.

EX Research Institute Ltd.

OYO Corporation

Osumi Co.,Ltd (Japanese Website Only)

ORIENTAL CONSULTANTS Co., LTD.

ENVIRONMENTAL CONTROL CENTER CO.,LTD.

CTI Engineering Co., Ltd.

Kokusai Kogyo Co., Ltd.

SUURI-KEIKAKU Co., Ltd. (Japanese Website Only)

Chuo Kaihatsu Corporation (Japanese Website Only)

Techno Chubu Co., Ltd. (Japanese Website Only)

Nippon Koei Co., Ltd.

Pacific Consultants Co., Ltd.

Hiyoshi Corporation

Fujitsu Limited

Yachiyo Engineering Co., Ltd.

Yuko-Keiso Co., Ltd.

DKK-TOA CORPORATION

HORIBA, Ltd.

Kawasaki City

Northwest Pacific Region Environmental Cooperation Center (NPEC)

Kitakyushu International Techno-cooperative Association (KITA)

Kitakyushu City

International Center for Environmental Management of Enclosed Coastal Seas (EMECS Center)

Association of International Research Initiatives for Environmental Studies (AIRIES)

International Lake Environment Committee Foundation (ILEC)

Saitama Prefecture

Japan Environmental Management Association for Industry (JEMAI)

Shiga Prefecture

Jokaso System Association (Japanese Website Only)

Global Environment Centre Foundation (GEC)

Institute for Global Environment Strategies (IGES)

The Tokyo Chamber of Commerce and Industry

Japan District Heating & Cooling Association (Japanese Website Only)

Japan Association of Environment Assessment

Japan Environmental Sanitation Center (JESC)

Japan Environmental Technology Association

Japan Environmental Measurement and Chemical Analysis Association (JEMCA)

Japan Industrial Waste Information Center (JW Center)

Japan Quality Assurance Organization (JQA)

Japan Association for the United Nations Environment Programme (Japanese Website Only)

Fukuoka City

Yokohama City