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
236220 – Commercial and Institutional Building Construction
721110 – Hotels (except Casino Hotels) and Motels
236118 – Residential Remodelers
532412 – Construction, Mining, and Forestry Machinery and Equipment Rental and Leasing
238340 – Tile and Terrazzo Contractors