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关税威胁特朗普政府又盯上“铜博士”?专家:美国本土产能增长有限
白宫声明表示,特朗普认识到,过度依赖外国产铜可能会危及美国的国防能力、基础设施建设和技术创新。尽管美国拥有丰富的铜储备,但其冶炼和精炼能力落后于全球竞争者。美国在铜冶炼能力方面甚至未进入全球前五名。
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