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
541330 – Engineering Services
541990 – All Other Professional, Scientific, and Technical Services
334111 – Electronic Computer Manufacturing
332710 – Machine Shops
325220 – Artificial and Synthetic Fibers and Filaments Manufacturing