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在化学分析领域，随着技术的不断进步和应用需求的日益多样化，对标准物质的要求也越来越高。特别是在氯乙酸甲酯的分析过程中，拥有一款精准可靠的标准物质，对于确保分析结果的准确性和可重复性至关重要。一、氯乙酸
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昨日纯碱主力合约2409大幅微下跌，收于1772元/吨，下跌62元/吨，跌幅3.38%。现货方面，昨日纯碱华东、华中地区轻重碱下跌50-100元/吨。整体来看，纯碱产量持续攀升，部分检修损失量被新增产
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