The NAICS industry codes define establishment based on the activities in which they are primarily engaged.

North American Industry Classification System (NAICS)

236220 Commercial and Institutional Building Construction

334111 Electrical Contractors and Other Wiring Installation Contractors

334111 Electronic Computer Manufacturing

423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers

443120 Computer and Software Stores

511210 Software Publishers

518210 Data Processing, Hosting, and Related Services

541310 Architectural Services

541330 Engineering Services

541340 Drafting Services

541430 Graphic Design Services

541511 Custom Computer Programming Services

541512 Computer Systems Design Services

541513 Computer Facilities Management Services

541519 Other Computer Related Services

541611 Administrative Management and General Management Consulting Services

541612 Human Resources Consulting Services

541690 Other Scientific and Technical Consulting Services

541990 All Other Professional, Scientific, and Technical Services