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The Bayan Obo region in Inner Mongolia is an important area for science and technology. It has quarries surrounded by grass and rocks. The region has the largest rare earth metal deposits on Earth.   Rare earth metals include yttrium, dysprosium, and neodymium, which are essential for modern te...

Rare earth magnets are strong permanent magnets made from rare earth elements. China makes most of them. Neodymium magnets are used in many appliances, vehicles, and jewelry. They are more valuable than rare earth metals. Rare earth magnets are also used in many military weapons. Other magnet factor...