Environment
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- Ministry of Environment
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- Korea Environmental Preservation Association
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- Korean Federation for Environmental Movement
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- Green Korea
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- United States Environmental Protection Agency
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- Korean Society of Environmental Engineers
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- Environmental Management Research Center
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- Korea Testing & Research Institute
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- Green Peace
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- National Institute of Environmental Research
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- Incheon Regional Environmental Management Office
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- Korea Environment Corporation
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- Korea Environmental engineers Association
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- Korea National Environmental Technology Information Center
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- US Environmental Protection Agency
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- Korean Society for Atmospheric Environment
Machines
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- Seoul Industrial Tools Commercial Cooperative
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- Korea Association of Machinery Industry
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- Korea Institute of Industrial Technology