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国际认可！热烈祝贺我司通过“CNAS 17034”标准物质/标准样品生产者认可证书！历经风雨，跨越重重难关，经过全体同事的不懈努力，北方伟业计量集团有限公司于近日顺利通过考核并
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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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