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美国劳工统计局于上周四发布最新生产者价格指数PPI）报告。数据显示，玻璃及玻璃制品制造业的PPI在1月份上调1%后，2月份再次上涨0.5%。过去五个月中，该行业的生产成本已有四个月呈上涨趋势。

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在化学分析领域，每一次精准的测量都离不开标准物质的校准与验证。特别是在复杂有机化合物的分析中，甲醇中邻二甲苯溶液标准物质以其独特的稳定性和适用性，成为了众多实验室的首选。多年的从业经验让我深知，选择正

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