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
811219 – Other Electronic and Precision Equipment Repair and Maintenance
541715 – Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
541620 – Environmental Consulting Services
334517 – Irradiation Apparatus Manufacturing
334516 – Analytical Laboratory Instrument Manufacturing