Variant of NAICS 1997 - Goods and services
- 41-91 - Services
- 56 - Administrative and Support, Waste Management and Remediation Services
- 561 - Administrative and Support Services
- 5617 - Services to Buildings and Dwellings
- 56179 - Other Services to Buildings and Dwellings
- 561791 - Duct and Chimney Cleaning Services
- 561799 - All Other Services to Buildings and Dwellings
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