Possible NAICS Codes
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
236220 – Commercial and Institutional Building Construction
236210 – Industrial Building Construction
238210 – Electrical Contractors and Other Wiring Installation Contractors
238220 – Plumbing, Heating, and Air-Conditioning Contractors
238990 – All Other Specialty Trade Contractors
541380 – Testing Laboratories and Services
561210 – Facilities Support Services
811210 – Electronic and Precision Equipment Repair and Maintenance
924120 – Administration of Conservation Programs