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在环境保护与职业健康日益受到重视的今天，准确测定空气中的苯系物含量成为了环境监测与工业卫生领域的核心任务之一。基于多年的行业经验，我深知在复杂多变的实际环境中，拥有一套可靠、精准的苯系物测定标准物质对
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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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