https://techcrunch.com/2022/09/02/china-us-nvidia-export-ban/

Nvidia, the world’s largest maker of artificial intelligence chips, is at the heart of a new round of U.S. tech sanctions targeting China.

Nvidia noted in an SEC filing that the U.S. government had imposed new export restrictions on two of its most advanced AI chips to China, its second-largest market after Taiwan making up 26% of its revenues in 2021.