China intensified its trade standoff with the United States on Sep. 15, accusing tech giant Nvidia, the most valuable U.S. company, of violating anti-monopoly laws.

The announcement followed the conclusion of a preliminary antitrust probe by the State Administration for Market Regulation. Regulators said Nvidia had breached conditions set during its 2020 acquisition of Israeli chip designer Mellanox Technologies, though they provided no specifics. A further investigation will be carried out, the agency said.

The move comes as U.S. and Chinese diplomats meet in Madrid this week for their fourth round of trade talks. U.S. Treasury Secretary Scott Bessent, leading the negotiations, said Sunday that discussions had been progressing well.

China's latest against Nvidia

But tensions have rise

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