A O S

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

• Fiber Optics

North American Industry Classification System (NAICS) Categories:

• Power And Communication Line And Related Structures Construction > Communications Cable Contractors > Fiber Optics

Standard Industry Classification (SIC) Categories:

• Constructing Water, Sewer, Power, & Communication Lines And Pipelines > Communications Cable Contractors > Fiber Optics