Finding credible information about a company can be tricky. Don't just rely on the company's website! One of the best ways to search for data about a publicly-traded company is to use the stock market ticker symbol. Don't know it? Look it up at http://www.marketwatch.com/tools/quotes/lookup.asp
The best way to search for data about an entire industry is to first look up the North American Industry Classification System (NAICS) number for that industry here: https://www.census.gov/naics/