China tightens export rules for crucial rare earths

Peter HoskinsBusiness reporter

Bloomberg via Getty Images A person's hand holds open a bad of the rare earth element neodymium, which is used for producing permanent magnets.Bloomberg via Getty Images

Neodymium is used to make the strong magnets used in loudspeakers, computer hard drives, electric car motors and jet engines

China has tightened its rules on the export of rare earths – the…

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