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
423310 – Lumber, Plywood, Millwork, and Wood Panel Merchant Wholesalers
423610 – Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers
332311 – Prefabricated Metal Building and Component Manufacturing
236220 – Commercial and Institutional Building Construction