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Federal contracts by trade
A short list of NAICS codes small shops ask about. A short prefix includes the codes under it.
Building construction (236)847 openSpecialty trade contractors (238)568 openRoofing contractors (238160)45 openPlumbing and HVAC (238220)152 openElectrical contractors (238210)91 openPainting and wall covering (238320)21 openSite preparation (238910)18 openJanitorial services (561720)88 openLandscaping (561730)100 openTrucking (484)23 openProfessional services (541)2946 open