Possible NAICS Codes
237110 – Water and Sewer Line and Related Structures Construction
236220 – Commercial and Institutional Building Construction
541380 – Testing Laboratories
541330 – Engineering Services
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
921190 – Other General Government Support
334515 – Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals
238990 – All Other Specialty Trade Contractors
238190 – Other Foundation, Structure, and Building Exterior Contractors
238120 – Structural Steel and Precast Concrete Contractors