Variant of North American Industry Classification System (NAICS) 2022 Version 1.0 for Energy sector
- Non E - Industries not included in the energy sector
- 54 - Professional, scientific and technical services
- 541 - Professional, scientific and technical services
- 5413 - Architectural, engineering and related services
- 54131 - Architectural services
- 541310 - Architectural services
- 54132 - Landscape architectural services
- 541320 - Landscape architectural services
- 54133 - Engineering services
- 541330 - Engineering services
- 54134 - Drafting services
- 541340 - Drafting services
- 54135 - Building inspection services
- 541350 - Building inspection services
- 54136 - Geophysical surveying and mapping services
- 541360 - Geophysical surveying and mapping services
- 54137 - Surveying and mapping (except geophysical) services
- 541370 - Surveying and mapping (except geophysical) services
- 54138 - Testing laboratories
- 541380 - Testing laboratories
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