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SIC 7331 This category includes establishments primarily engaged in creating, producing, and mailing direct mail promotional pieces for clients. This industry also encompasses establishments primarily employed in compiling and selling mailing lists. Establishments primarily engaged in reproducing direct mail copy on order but performing none of the other direct mail advertising services are classified in manufacturing, industry group 275 if they print the copy and in SIC 7334: Photocopying and Duplicating Services if they duplicate the copy by photocopying or similar reproduction methods....
