节点：上游（原材料/资源端）位置：上游情绪：中性参考度：2/10
巴西钢铁和铁矿石生产商Usiminas公布2026年第一季度净利润1.78589亿美元，较2025年第四季度增长596%。
公司将积极业绩归因于运营和财务业绩的改善，以及汇率变动的积极影响。
净销售收入增长5%至11.76亿美元，产品销售成本下降9%至10.34亿美元，毛..
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