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