Possible NAICS Codes
237990 – Other Heavy and Civil Engineering Construction
238210 – Electrical Contractors and Other Wiring Installation Contractors
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
236220 – Commercial and Institutional Building Construction
221111 – Hydroelectric Power Generation
238990 – All Other Specialty Trade Contractors
238190 – Other Foundation, Structure, and Building Exterior Contractors
221310 – Water Supply and Irrigation Systems