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| NAICS Association Official page of the NAICS Association provides a complete list of SIC and NAICS codes, reference files, manuals and reference software. | |
| Hoover's: Industry Research by SIC Code Provides in-depth business and public/private company information, financials, competitors , industry overviews, officers, including profiles and news. | ||
| Company Information and SIC Codes: Harris businesses. Download company information including SIC codes, NAICS and more. Free 7-day trial. Get unlimited access to company profiles for all U.S. | ||
| SIC and NAICS Codes Provides concise definitions of SIC and NAICS codes, including why we have them and where you can find them. | ||
| North American Industry Classification System The NAICS has replaced the US Standard Industrial Classification (SIC) system and was developed jointly by Canada, the US, and Mexico. | ||
| SIC/NAICS Codes Provides a complete index of SIC/NAICS business codes organized by aphebetically by industry. | ||
| Table of Small Business Size Standards Provides an industry-specific table of Small Business Size standards according to the NAICS system of classification. | ||
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