Sanitation standards are certainly not the same in China as they are in the US. When traveling here, be careful when eating food from a street vendor; be careful eating food from a supermarket even. Meat, for example, is not generally kept under refrigeration. This short video clip, for example, shows snacks available at a street market - WaFungJing. Not to mention the selection of foods available (scorpions, chicken hearts, grubs, squids, and unknown meats) all of it sits out all day and none of it is refrigerated. Enjoy, at your own risk.