North American Industry Classification System (NAICS) Canada 2017 Version 2.0
- 56 - Administrative and support, waste management and remediation services
- 561 - Administrative and support services
- 5616 - Investigation and security services
- 56162 - Security systems services
- 561621 - Security systems services (except locksmiths)US
- 561622 - LocksmithsUS
- Date modified: