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Industries and Activities
NationalIndustry
Plumbing, Heating, and Air-Conditioning Contractors
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nationalIndustry
Air system balancing and testing
Plumbing, Heating, and Air-Conditioning Contractors
Air vent installation
Plumbing, Heating, and Air-Conditioning Contractors
Air-conditioning system (except window) installation
Plumbing, Heating, and Air-Conditioning Contractors
Bathroom plumbing fixture and sanitary ware installation
Plumbing, Heating, and Air-Conditioning Contractors
Blower or fan, cooling and dry heating, installation
Plumbing, Heating, and Air-Conditioning Contractors
Boiler chipping, cleaning and scaling
Plumbing, Heating, and Air-Conditioning Contractors
Boiler, heating, installation
Plumbing, Heating, and Air-Conditioning Contractors
Central air-conditioning equipment installation
Plumbing, Heating, and Air-Conditioning Contractors
Central cooling equipment and piping installation
Plumbing, Heating, and Air-Conditioning Contractors
Central heating equipment and piping installation
Plumbing, Heating, and Air-Conditioning Contractors
Chilled water system installation
Plumbing, Heating, and Air-Conditioning Contractors
Chimney liner installation
Plumbing, Heating, and Air-Conditioning Contractors
Commercial freezer installation
Plumbing, Heating, and Air-Conditioning Contractors
Commercial refrigeration system installation
Plumbing, Heating, and Air-Conditioning Contractors
Cooling tower installation
Plumbing, Heating, and Air-Conditioning Contractors
Drain, waste and vent system installation
Plumbing, Heating, and Air-Conditioning Contractors
Drinking fountain installation
Plumbing, Heating, and Air-Conditioning Contractors
Dry heating equipment installation
Plumbing, Heating, and Air-Conditioning Contractors
Duct work (e.g., cooling, dust collection, exhaust, heating, ventilation) installation
Plumbing, Heating, and Air-Conditioning Contractors
Dust collecting and bag house equipment installation
Plumbing, Heating, and Air-Conditioning Contractors
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