And this isn't even a story about Chinese made or processed goods.
Via the NYT -- Beef trimmings were often sent off to be made into cooking oil or into pet food because the trimmings had a high risk of E. coli, salmonella and other food pathogens. A company called Beef Products, though, found a way around this -- by treating this beef (gassing it basically) with ammonia. This ammoniated beef is then sold to school lunch programs and McDonalds and other processors where it is used as an extender product.