China has contested a US ban on the import of Chinese poultry in a case filed with the World Trade Organization.

Beijing also said Washington is breaking global commerce rules in stopping Chinese chicken parts from entering the US, according to an Associated Press report.

The bird flu outbreak of 2004 saw both nations bar the import of the other’s poultry. China lifted the embargo a few months later.

Since 2004, more than 4 million tons of US poultry have made their way to China -- most being parts, such as chicken feet, favorable only in China.