China has summoned Nvidia to address alleged H20 chip security flaws, raising fresh concerns about the AI giant’s China business.

China state media is calling for Nvidia Corp. to prove that its H20 chip is secure, saying it can’t allow flawed chips into the country.China’s top internet watchdog summoned Nvidia representatives earlier this week to discuss what Chinese officials called significant security vulnerabilities in the H20.

NVIDIA has been called in by Chinese regulators over claims that its H20 AI chip poses security risks, putting billions in potential sales at stake.