According to foreign media reports, the Biden administration in the United States plans to impose a new round of restrictions on the export of artificial intelligence chips from companies such as NVIDIA (NVDA. O) before leaving office. According to people familiar with the matter, the United States wants to limit the sale of artificial intelligence chips used in data centers at the national and company levels, with the aim of concentrating artificial intelligence development in friendly countries and prompting global companies to align with American standards. At a time when demand for AI technology is surging, the move will extend semiconductor restrictions to most parts of the world. The new regulations will set three layers of restrictions on chip trading, and may be released as soon as Friday, people familiar with the matter said. Affected by the news, NVIDIA, AMD (AMD. O) and other stocks fell after the market.