The entities are one of China’s leading supercomputer makers, Sugon; three subsidiaries set up to design microchips, Higon, Chengdu Haiguang Integrated Circuit and Chengdu Haiguang Microelectronics Technology; and the Wuxi Jiangnan Institute of Computing Technology. They lead China’s development of high-performance computing, some of which is used in military applications like simulating nuclear explosions, the Commerce Department said.
Other Chinese companies that have been barred from access to American technology include the telecom equipment giant Huawei, which was added to the entity list in May. The Trump administration is also considering adding Hikvision, a surveillance-technology company, The New York Times has reported.
The restriction of additional companies could further complicate efforts to reach a trade deal. American and Chinese officials recently restarted talks after negotiations collapsed in May, with Mr. Trump accusing China of breaking a previous deal and the two countries intensifying their tariff fight.