N95 means it could block 95% fine particle in the air, good for

made by 3M

所有跟帖： 

• 对这次鸟流感来说，N95比PM2.5要好吗？刚给国内朋友带去了N95。 谢谢！ -sitka- ♀ (0 bytes) () 04/24/2013 postreply 12:19:34

• N95 filter out as small as PM0.3 particle, which is smaller than -御用文人- ♀ (495 bytes) () 04/24/2013 postreply 15:06:53

• 谢谢这么详细的解释。 -sitka- ♀ (0 bytes) () 04/24/2013 postreply 17:28:38

• 其实您的国内的朋友，只要他问问周围的人就知道该买什么口罩了。3M的N95是国内的最好牌子。。。 -御用文人- ♀ (138 bytes) () 04/24/2013 postreply 17:48:15