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@dakan 先不论是不是N95,看国家强制标准,有没有这四个标准号:YY0969-2013(普通医用口罩)、YY0469-2011/2016(医用外科口罩)、GB19083-2010(医用防护口罩),GB2626-2006(呼吸防护用品――自吸过滤式防颗粒物呼吸器)。最后这个,就是大部分3M品牌所持有的标准号。 twitter.com/icarian/status/122

t.me/private_channel_c14370a/3

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