IBISWorld is the best database for profiles of industries. It provides detailed analyses of supply chains, SWOT analysis, industry outlook, and profiles of the major companies in the industry.
Statista combines its own statistical analysis with other stats from other sources into one very easy to use database. All reports are presented with detailed charts and graphs.
From the publisher description: "Contains composite financial data on manufacturing, wholesaling, retailing, service, and contracting lines of business. Arranged by SIC code, this work makes it possible to compare one company's performance relative to other companies in the same line of business"
All companies that trade on an American stock exchange have to file what are called 10-K and 10-Q reports with the Securities and Exchange Commission. These reports follow a strict format, and can have a lot of information about a company.
RMA annual statement studies
