U.S. businesses in China are voicing increased concern about unclear laws, perceived antiforeign sentiment and industrial overcapacity, adding to worries about uncertainty over the slowing Chinese economy.

Here are five charts breaking down the concerns they voiced in an annual survey of members of the American Chamber of Commerce in China released Wednesday.

1. Most companies believe antiforeign sentiment from the government is growing in China:

2. Air pollution in major Chinese cities is impeding companies' efforts to attract senior executives:

3.Inconsistent regulatory practices and murky laws are a top challenge: