Learn about the History of the NAPCS, The NAPCS Structure, and Read NAPCS FAQs NAICS Association Recommended Business Links A list of Links and Contact Information for Official Agencies that use or implement the NAICS code, including statistical agencies and the US Census Bureau....
Other systems like the Standard International Trade Classification and the Harmonized System, both international standards used for trade classification, exist for this purpose. However, a NAICS-related effort known as the North American Product Classification System (NAPCS) was initiated in 1999. ...