North American Industry Classification System Codes

236210 – Industrial Building Construction

237130 – Power and Communication Line and Related Structures Construction

238210 – Electrical Contractors and Other Wiring Installation Contractors

423430 – Office Equipment Merchant Wholesalers

541330 – Engineering 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

541618 – Other Management Consulting Services

541690 – Other Scientific and Technical Consulting Services

541990 – All Other Professional, Scientific, and Technical Services

561499 – All Other Business Support Services