China hits US defence firms with sanctions over arms sales to Taiwan

China has announced sanctions targeting 10 individuals and 20 US defence firms, including Boeing's St Louis branch, over arms sales to Taiwan. 

"China once again urges the US to abide by the one-China principle," a Ministry of Foreign Affairs spokesperson said on Friday.

"Stop the dangerous moves of arming Taiwan, stop undermining peace and stability in the Taiwan Strait, and stop sending wrong signals to 'Taiwan independence' separatist forces."

China would continue to defend its national sovereignty, security and territorial integrity, they said.

A spokesperson for the US State Department said the United States strongly objected to the Chinese move, which freezes any assets the companies and individuals hold in China and bars domestic organisations and individuals from doing business with them.

Individuals on the Chinese list, including the founder of defence firm Anduril Industries and nine senior executives from the sanctioned firms, are also banned from entering China, it added.

Other companies targeted include Northrop Grumman Systems Corporation and L3Harris Maritime Services, and Boeing's St Louis branch, which focuses on defence work.

The Chinese action appears largely symbolic, given China's lack of dealings with US defence firms, whereas it has been a major purchaser of Boeing civilian aircraft.

The move follows Washington's announcement last week of $11.1 billion (AU$16.5b) in arms sales to Taiwan, the largest ever US weapons package for the island, drawing Beijing's ire.

"The Taiwan issue is the core of China's core interests and the first red line that cannot be crossed in China-US relations," a Chinese foreign ministry spokesperson said in a statement on Friday.

"Any provocative actions that cross the line on the Taiwan issue will be met with a strong response from China," the statement said, urging the US to cease "dangerous" efforts to arm the island.

China views democratically-governed Taiwan as part of its own territory, a claim Taipei rejects.

The US is bound by law to provide Taiwan with the means to defend itself, though such arms sales are a persistent source of friction with China.

The State Department spokesperson said this policy had "remained consistent across nine different US administrations and contributes to the maintenance of peace and stability across the Taiwan Strait".

"We strongly object to Beijing's efforts to retaliate against US companies for their support of US arms sales that support Taiwan's self-defence capabilities," the spokesperson said, while urging Beijing to cease military, diplomatic, and economic pressure against Taiwan and instead engage in meaningful dialogue with Taipei.

Boeing has been in talks to sell Chinese carriers up to 500 civilian jets, according to a report in September, which would represent a major breakthrough for the company in the world's second-largest aviation market, where orders have stalled amid US-China trade tensions.

List of senior executives whose Chinese assets will be frozen:

ABC/Reuters