On Tuesday, Bloomberg reported that the Biden administration is preparing a trade blacklist of over 30 Chinese companies, including major chipmaker Yangtze Memory Technologies (YMTC), all of which will be barred from purchasing certain American technology components.

According to sources, the firms will be added to a so-called Entity List by the Department of Commerce as early as this week.

Companies on the Entity List will not be allowed to purchase specific technologies from US companies unless they acquire a special export license. Already several entities judged threats to national security, including Chinese tech giant Huawei have had similar restrictions placed upon them for reasons of national security.

Beijing has attacked the decision by Washington, accusing the United States of disrupting supply chains.

On Wednesday, Chinese Foreign Ministry spokesman Wang Wenbin said to reporters, that the US has “politicized and weaponized economic cooperation,” and he promised Beijing would take steps to protect the rights of the companies listed on the Entity List.

The relationship between the US and China has been increasingly fraught of late, as the world’s two largest economies have been locked in fierce competition in key technology sectors such as semiconductors. The Biden administration had already unveiled a sweeping set of regulations in October restricting China’s ability to buy semiconductors and chip-making equipment. YMTC and other Chinese semiconductor manufacturers had been placed on a list for increased scrutiny at that point.