C3i

C3i is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Security Consultants Protective

North American Industry Classification System (NAICS) Categories:

• Security Guards And Patrol Services > Security Consultants & Agencies > Security Consultants

Standard Industry Classification (SIC) Categories:

• Detective Guard & Armored Car Services > Security Consultants & Agencies > Security Consultants