Chinese authorities summoned Nvidia Corp. to discuss alleged security risks related to its H20 chips, casting doubt over the domestic business of the world’s most valuable company weeks after co-founder Jensen Huang met senior officials in Beijing.

After Washington’s U-turn, Nvidia chief executive Jensen Huang visited Beijing to meet officials and customers. He stressed his company’s commitment to the Chinese market and introduced a new graphics processing unit based on the latest Blackwell series that is tailored to align with existing US export controls.

China's cyberspace regulator said it has asked U.S. semiconductor maker Nvidia to explain whether its H20 artificial intelligence chips have any backdoor security risks.