NAICS Code 81 Companies ... NAICS Code 813 Companies ... NAICS Code 8139 Companies ... NAICS Code 81392 Companies ... NAICS Code 813920 Companies
Professional Organizations
This industry comprises establishments primarily engaged in promoting the professional interests of their members and the profession as a whole. These establishments may conduct research; develop statistics; sponsor quality and certification standards; lobby public officials; or publish newsletters, books, or periodicals for distribution to their members.
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