Mai ʻOkakopa a Kepakemapa 2023, he 14 mau mea hana o praseodymium neodymium oxide ma Kina i hoʻōki i ka hana, me 4 ma Jiangsu, 4 ma Jiangxi, 3 ma Inner Mongolia, 2 ma Sichuan, a me 1 ma Guangdong.ʻO ka nui o ka mana hana he 13930.00 metric tons, me ka awelika o 995.00 metric ...
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