The move comes after a Chinese balloon suspected of carrying out surveillance flew over the US last week, raising political tensions between the world's two largest economies.
The six companies support the Chinese government's"modernization efforts, specifically those related to aerospace programs, including airships and balloons and related materials and components, that are used by the People's Liberation Army for intelligence and reconnaissance," the Commerce Department's Bureau of Industry and Security said in a statement.
The inclusion of the companies on the Commerce Department's"Entity List," sends"a clear message to companies, governments, and other stakeholders globally that the entities on the list present a threat to national security," the statement said. "The Entity List is a powerful tool for identifying and cutting off actors that seek to use their access to global markets to do harm and threaten American national security."