China has suspended beef imports from three Brazilian meatpacking plants after detecting synthetic veterinary hormones in cattle, according to a report by Globo Rural and confirmed by Reuters. The affected plants are operated by JBS, Prima Foods and Frialto. China prohibits the use of certain synthetic hormones in beef production, and the suspensions come as Brazil seeks expanded access to the Chinese market, its largest foreign customer for beef exports. Brazilian officials recently requested approval for exports from 33 additional meatpacking facilities. The companies involved did not immediately comment on the suspensions. Brazil’s beef industry association, Abiec, also has not publicly detailed how long the restrictions may remain in effect. Earlier last week, China approved the resumption of shipments from three other Brazilian beef plants that had previously faced restrictions. The latest move adds uncertainty to trade between the two countries as China continues closely monitoring imported meat supplies.