China will impose unspecified sanctions on the defense unit of Boeing Co., Lockheed Martin Corp., and Raytheon Technologies Corp. after the U.S. approved $1.8 billion in arms sales to Taiwan last week.

The sanctions will be imposed "in order to uphold national interests,” Chinese Foreign Ministry spokesman Zhao Lijian told reporters Monday in Beijing. "Boeing Defense” would be among those sanctioned, he said.

The State Department last week approved $1.8 billion in new weapons for Taiwan and submitted the package to Congress for a final review. The submission comes two months after the U.S. and Taiwan completed the sale of 66 new model F-16 Block 70 aircraft from Lockheed, and as tensions between the two superpowers continue to escalate ahead of the American election.