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Intro to Industry
These pages will explain ways to search for industry info. If you are targeting a specific company, you may also want to check out the Company Research guide.
Throughout these pages are multiple references to NAICS and SIC codes. NAICS is the current standard, but many sources continue to use SIC. Both classification systems provide a way to organize companies into specific industry groups. Below are links to outlines and manuals for both. They also provide complete definitions and descriptions for each industry.