China’s cyberspace regulator said Thursday that it had summoned representatives of U.S. tech giant Nvidia to explain alleged security vulnerability risks involving its highly sought-after H20 artificial intelligence chips.

China raised concerns over potential security risks in Nvidia's H20 artificial intelligence chip, casting uncertainty over the U.S. company's sales prospects in China weeks after a U.S. export ban was reversed.

Chinese authorities summoned Nvidia representatives on Thursday to discuss "serious security issues" over some of its artificial intelligence chips, as the US tech giant finds itself entangled in trade tensions between Beijing and Washington.