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kn90和n90口罩区别
更新时间: 2020-10-31 00:00:00  

kn90和n90口罩区别是:KN90是中国国家标准GB2626-2006对防颗粒物口罩的分类,N95型口罩,是美国NIOSH认证的9种防颗粒物口罩中的一种。“N”的意思是非油性的颗粒;“90”是指,在NIOSH标准规定的检测条件下,过滤效率达到90%。只要符合N90标准,并且通过NIOSH审查的产品就可以称为“N90型口罩”。

关键词: kn90 n90 口罩 区别

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