The U.S. Census explains that the North American Industry Classification System (NAICS) is the "standard used by Federal statistical agencies in classifying business establishments for the purpose of collecting, analyzing, and publishing statistical data related to the U.S. business economy."
The information could be used for research purposes in an advertising campaign to find out more about certain industries, such as 311410 Frozen food manufacturing. (The number 311410 is the 6-digit NAICS code for "Frozen food manufacturing.")
The Library of Congress includes helpful background information about the NAICS in its research guide to Doing Industry Research.
The U.S. Bureau of Labor Statistics has a free Industry Finder Search, if you need a quick access point.
What strategies can you use for a company that is too small to be listed in databases with information on specific companies?
What strategies can you use to find background/historical information on a local company in a small town?
Search by keyword, company, or NAICS (North American Industry Classification System) code.
For example: frozen food
Can click on Industry Report for Frozen Food Production in the US
If there are no articles about a particular company, you may find articles about a similar company.
"amy's kitchen" AND frozen
Articles may be filtered by a date range, such as 2006 to 2016
You may click on any links in an article for a new search.
The subject term Frozen foods could be useful.
The NAICS Code 311410 Frozen food manufacturing is certainly related.
Consider browsing more articles from the periodical that published the good article, such as the trade magazine Refrigerated & Frozen Foods Retailer.