China is flexing its supply chain muscles — and the auto industry is freaking out

China imposed restrictions in April on the export of rare earth magnets used in car production.

Hendrik Schmidt/Getty Images

• China dominates rare earth magnet production, and began limiting exports after Trump's trade war began.
• The magnets are crucial for some carmakers, with the restrictions throwing the auto industry into chaos.
• US and European suppliers warn that factories and production lines face shutdowns unless China relents.

China is flexing its supply...