娱乐动态
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在化学分析与检测的广阔领域里，标准物质如同标尺，衡量着每一次实验的准确与否。尤其对于农药残留、环境监测等关键领域，甲醇中丙溴磷溶液标准物质更是扮演着举足轻重的角色。基于多年的行业经验，我深知一个高质量
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夏天到了，不少人会用蚊香、电热蚊香液驱蚊。可您知道吗？这些驱蚊产品安不安全，其实是有国家标准严格把关的！GB/T 13917.4-2009、GB/T 13917.5-2009、GB/T 13917.6
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中国消费者报北京讯由中华商标协会联合中华全国专利代理师协会、中国人民大学信息资源管理学院、中国消费者报社、《中国名牌》杂志社、中国酒业协会等十余家科研院所、行业协会、专业机构、新闻媒体，共同起草制定的