BEIJING — The United States has blacklisted six Chinese entities He said they were linked to Beijing’s aerospace programs as part of its retaliation for an alleged Chinese spy balloon traversing US airspace.

The economic restrictions announced Friday followed a commitment by the Biden administration to consider broader efforts to tackle Chinese surveillance activities and will make it more difficult for the five companies and a research institute to win exports of American technology.

The move is likely to further intensify the diplomatic row between the United States and China sparked by the balloon, which was shot down last weekend off the coast of Carolina. The United States said the balloon was equipped to detect and collect intelligence signals, but Beijing insists it was a weather craft that had drifted off course.

The incident prompted Secretary of State Antony Blinken to abruptly cancel a high-risk trip to Beijing with the aim of easing tensions.

The US Bureau of Industry and Security said the six entities were under attack for «their support for China’s military modernization efforts, specifically the People’s Liberation Army’s aerospace programs, including airships and balloons.»

“The PLA is using High Altitude Balloons (HAB) for intelligence and reconnaissance activities,” he said.

Under Secretary of Commerce Don Graves said on Twitter that his department «will not hesitate to continue to use» such restrictions and other regulatory and enforcement tools «to protect the national security and sovereignty of the United States.»

The six entities are Beijing Nanjiang Aerospace Technology Co., China Electronics Technology Group Corporation 48th Research Institute, Dongguan Lingkong Remote Sensing Technology Co., Eagles Men Aviation Science and Technology Group Co., Guangzhou Tian-Hai-Xiang Aviation Technology Co., and Shanxi Eagles Men Aviation Science and Technology Group Co.

The research institute did not immediately respond to a request for comment. The other five entities could not be contacted.

On Friday, a US military fighter jet shot down an unknown object flying off the remote north coast of Alaska on the orders of President Joe Biden. The object was shot down because it reportedly posed a threat to the safety of civilian flights, rather than knowing it was being watched.

But the twin incidents in such close succession reflect heightened concern about China’s surveillance program and public pressure on Biden to take a tough stance against it.