The latest exchange comes as Washington and Beijing try to maintain stability in their relationship amid a growing fight over technology and supply chains. Six were targeted after Washington barred imports from 43 Chinese companies over alleged forced labor involving Uyghurs and other minority groups in Xinjiang. Chinese companies lead the global drone industry and dominate much of its supply chain. A wider tech fightThe drone restrictions are part of a broader clash over trade and technology measures. Washington also barred imports from dozens of Chinese companies over alleged forced labor and has threatened sanctions against Chinese artificial intelligence firms.