The Chinese government said Tuesday that it would restrict any effort to transfer out of China eight key technologies for manufacturing electric vehicle batteries, a move that could cement the country’s already dominant role in the production of electric cars.

The plan could make it harder for Chinese electric carmakers to set up factories overseas, as the European Union has pushed them to do. Effective immediately, any overseas transfer of these technologies through trade, investment or technological cooperation will first require a license from the Chinese government, the Ministry of Commerce said.

The U.S. plans for at least two Chinese EV battery factories, which have been proposed in Michigan. — The New York Times