What is the definition of primary NAICS code? How can there be more than one NAICS code for a facility?
A primary NAICS code generally represents those goods produced or services performed by an establishment that have the highest value added. Form R and the Alternate Certification Statement (Form A) provide space for more than one NAICS code because a facility may be made up of several establishments each of which may have a different primary NAICS code. Additional information on NAICS codes can be found on the NAICS TRI Web site.