Possible NAICS Codes
541715 – Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
541611 – Administrative Management and General Management Consulting Services
541380 – Testing Laboratories and Services
541990 – All Other Professional, Scientific, and Technical Services
481211 – Nonscheduled Chartered Passenger Air Transportation
541330 – Engineering Services
492110 – Couriers and Express Delivery Services
541620 – Environmental Consulting Services
541690 – Other Scientific and Technical Consulting Services
481111 – Scheduled Passenger Air Transportation