WASHINGTON: The United States on Friday announced it has imposed export controls on 77 Chinese companies including the country`s biggest chipmaker, SMIC, restricting its access to US technology over its alleged ties to China`s military.

The announcement in the final weeks of President Donald Trump`s term comes after relations between Washington and Beijing soured under his administration, which saw the US start a trade war with China and expand its list of sanctione d entities to a few hundred Chinese companies and subsidiaries.

In a statement, Commerce Secretary Wilbur Ross said the designations, which restrict US companies` abilities to do business with the firms, are over an array of charges including human rights abuses, the activities of the Chinese military, particularly in the South China Sea, as well as theft of US technology.

`China`s corrupt and bullying behavior both inside and outside its borders harms US national security interests, underminesthe sovereignty of our allies and partners, and violates the human rights and dignity of ethnic and religious minority groups,` Ross said.

`Commerce will act to ensure that America`s technology developed and produced according to open and free-market principles is not used for malign or abusive purposes.` SMIC has received billions of dollars in support from Beijing and is at the heart of its ef forts to improve the country`s technological selfsufficiency.

In a call with reporters, a senior Commerce Department official said Washington has evidence that SMIC has worked with the Chinese military on developing shortand mediumrange ballistic missiles and exoskeletons for soldiers, but had been in talks with SMIC for months on a way to avoid the designation.

`We`re adding SMIC to the entity list mostly because we need to make sure US intellectual property and manufacturing capabilities are not being used by SMIC`s clients to con-tinue to support the militarycivil fusions efforts within China,` the of ficial said.

`We simply no longer could stand by and watch our adversary using our technologies to support its military capabilities.` The designation means US companies must apply for a license before exporting to SMIC, and specifically targets the Chinese firm`s ability to acquire materials for producing chips of 10 nanometres or smaller, the best class in the industry.

Also targeted was drone manufacturer DJI `because of its complicity in human rights violations within China,` the official said.

That company holds some 70pc of the global drone market, and the US Department of the Interior last year grounded its fleet of the company`s drones amid rising security concerns over Chinese electronics.

On Jan 20 Trump is set to hand power to President-elect Joe Biden, who has said he would maintain his predecessor`s trade policies, at least at first.-AFP