China has introduced a tracking system for its rare earth magnet sector, three sources said, as its export restrictions on them begin to cut off customers around the world.

The auto industries in both the US and Europe could come to a standstill within weeks thanks to China’s ongoing restrictions on exports of rare earth minerals and magnets. Several European car part manufacturers have already halted production lines according to the European Association of Automotive Suppliers (CLEPA).

Options include moving car part manufacturing to China despite tariffs, or just slowing down the push for electric vehicles.