Apple’s investment in the mining company MP Materials will also help the tech giant reduce its dependence on China for rare earth metals.

MP Materials will supply Apple with magnets it produces at a Texas facility, expanding Apple’s U.S. supply chain at a time when President Trump has pressured Apple to do so.

Apple has signed a $500 million deal with MP Materials for rare earth magnets, mitigating supply risks after China curbed exports this year and representing a major coup for MP that sent its shares soaring by a fifth.