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.

The cyberspace regulator in Beijing said it questioned Nvidia over its H20 chips, which Washington only recently allowed to resume being exported to China.

While Nvidia has been given assurances by Washington that it will be allowed to resume exports of its made-for-China H20 general processing units, the AI chips may be met with increased scrutiny from