U.S. Geological Survey: China produces about 90 percent of the world's refined rare earths and 99.9 percent of heavy rare earths.
China accounted for approximately 90% of global refined rare-earth output and 99.9% of global heavy rare-earth output.
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U.S. Geological Survey: China produces about 90 percent of the world's refined rare earths and 99.9 percent of heavy rare earths.