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The Air Conditioning, Heating & Refrigeration News |
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Air-Conditioning & Refrigeration Institute |
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American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc |
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THE MECHANICAL EQUIPMENT MANUFACTURES REPRESENTATIVES ASSOCIATION, INC |
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NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY |
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Sheet Metal and Air Conditioning Contractors' National Association |
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Building Congress & Exchange |
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UNDERWRITERS LABORATORY |