China regulator stops testing and buying Nvidia RTX Pro 6000D

China’s internet regulator has ordered major domestic technology companies to stop testing and buying a China-tailored Nvidia artificial intelligence chip, in a move that marks a further escalation in U.S.-China tensions over high-end semiconductors. The Cyberspace Administration of China told firms including ByteDance and Alibaba this week to halt purchases and verification work on Nvidia’s RTX Pro 6000D, according to people briefed on the directive. The action comes amid broader Beijing efforts to boost domestic chipmaking and curb reliance on U.S. technology.

The order affects contracts that had already been initiated: several Chinese firms had placed orders and begun testing server designs built around the RTX Pro 6000D, Nvidia’s Blackwell-based model designed to comply with American export restrictions. After receiving the regulator’s directive, those companies told suppliers to suspend testing and deployment, the people said. Accounts vary on whether the ban explicitly covers other China-focused Nvidia models such as the H20; regulators previously issued guidance aimed at H20 shipments, and some reports said the latest move goes beyond that earlier guidance.