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How to find an industry classification code
North American Industry Classification System (NAICS)
Industry classification codes allow you to identify, define and categorize industries. They can be used in a number of databases to target information by industry.
Standard Industrial Classification (SIC)
SIC is a four-digit classification system developed in the 1930's for use by the U.S. federal government. Although still used in some databases, the SIC classification system is no longer being revised.
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