NAICS 322120 is the North American Industry Classification System code for Paper Mills, a national industry in the Pulp, Paper, and Paperboard Mills industry group (3221) of the Manufacturing sector (31-33).
NAICS 322120 is the code for Paper Mills, a national industry in the North American Industry Classification System (NAICS 2022), under 3221 (Pulp, Paper, and Paperboard Mills). It is a 6-digit code, the most specific NAICS level.
The parent of NAICS 322120 is 3221, Pulp, Paper, and Paperboard Mills. Every company under 322120 is also counted under 3221.