Financial information for foreign companies may not be standardized or audited in accordance with US Generally Accepted Accounting Principles (unless obtained through SEC Filing). Read Found in Translation: A Guide to Using Foreign Financial Statements by Susan M. Sorensen and Donald L. Kyle for issues to consider.
Foreign regulations often do not require companies to publicly disclose financial information, so rarely is the information available for free. There are resources for purchasing company financial information, which you may use at your own discretion.
Financial statements for international companies may be harder to obtain than those for U.S. companies for a few reasons.
If a foreign company trades on any of the U.S. exchanges, the SEC requires the company to file Form 20-F.