There are specific regulations that exist and are enforced in Germany (2009/48/EC) and the US (CPSC), that also exist in China (e.g. GB 6675) but enforcement is

There are specific regulations that exist and are enforced in Germany (2009/48/EC) and the US (CPSC), that also exist in China (e.g. GB 6675) but enforcement is relatively weak, especially for cheap toys from small manufacturers that end up in the hands of children.