The office of the U.S. Trade Representative announced that six U.S. pork-processing facilities have received clearance to resume exports to China. USTR made the announcement in a fact sheet describing the details of a Chinese-U.S. agreement but did not list the plants involved.

In August, China banned imports from a number of U.S. pork plants after finding traces of ractopamine in some shipments.

Smithfield CEO Larry Pope said recently that a team of Chinese officials inspected five Smithfield plants to determine whether their export certificates would be reinstated. Smithfield agreed in August to ship 60 million pounds of ractopamine-free pork to China by the end of December.

China’s agreement announced Tuesday also puts strict rules on certain Chinese food exports to the United States.