A Cs

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

• Radiotelephone Communication
• Research & Development In The Physical Engineering & Life Sciences

North American Industry Classification System (NAICS) Categories:

• Wireless Telecommunications Carriers (Except Satellite) > Radiotelephone Communications
• Research And Development In The Physical, Engineering, And Life Sciences

Standard Industry Classification (SIC) Categories:

• Radiotelephone Communications
• Noncommercial Research Organizations