North American Industry Classification System (NAICS)

541512 – Computer Systems Design Services (Primary)

541330 – Engineering Services

541511 – Custom Computer Programming Services

541513 – Computer Facilities Management Services

541519 – Other Computer Related Services

541712 – Research and Development in the Physical, Engineering and Life Sciences (except Biotechnology)

238210 – Electrical Contractors and Other Wiring Installation Contractors

517110 – Wired Telecommunications Carriers

517210 – Wireless Telecommunications Carriers (Except Satellite)

518210 – Data Processing, Hosting, And Related Services