This means that you'll be able to search for NAICS codes directly (if that's your jam). We'll do the math; let's make better data on public procurement together.
Possible NAICS Codes
541990 – All Other Professional, Scientific, and Technical Services
541330 – Engineering Services
611710 – Educational Support Services
541611 – Administrative Management and General Management Consulting Services
541720 – Research and Development in the Social Sciences and Humanities
541380 – Testing Laboratories