The US is tightening controls on China’s imports of civil nuclear technology to prevent use for military or other unauthorised purposes.
The policy comes as trade tensions between Washington and Beijing rise, with US President Donald Trump last month imposing tariffs on almost $US200 billion of Chinese imports and threatening more levies if China retaliated.
China then hit back with tariffs on about $US60 billion of US imports.
“The United States cannot ignore the national security implications of China’s efforts to obtain nuclear technology outside of established processes of US-China civil nuclear cooperation,” US Secretary of Energy Rick Perry said.
Last year the National Security Council led a review of China’s efforts to obtain nuclear material, equipment and advanced technology from US companies, government officials said.
The review, they said, was prompted by China’s accelerated efforts to acquire US intellectual property.