North American Industry Classification System (NAICS) 2007 - Service Industries
- 56 - Administrative and Support, Waste Management and Remediation Services
- 561 - Administrative and Support Services
- 5617 - Services to Buildings and Dwellings
- 56172 - Janitorial Services
- 561721 - Window Cleaning ServicesCAN
- 561722 - Janitorial Services (except Window Cleaning)CAN
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