再补充一下，下面链接powercom的有耳挂的也有头戴的，有20%off code； puri好像适合头大脸大的，也有20% code 勤劳的搬运工： Here''s a couple good sources for reusable respirators. These are the best option in terms because they''re proven to be effective and they can be reused for weeks/months when used in rotation: [] [] The Powecoms have a 20% code (thx to karenjang): 2021 The Dr. Puri also have a 20% off code: welcome2021 When used in rotation of 5-7 days, a N95/KN95/KF94 doesn''t need to be tossed until it''s soiled, damaged, or becomes difficult to breathe through. For me, that''s about 40-50 hours. https://www.sages.org/n-95-re-use-instructions/https://sharedhealthmb.ca/files/e...-masks.pdfhttps://www.health.nd.gov/sites/w..._Guide.pdf If you absolutely have to have something disposable, then REAL surgical masks are available too. For surgical masks (the real ones at least) it''s difficult to find a reliable vendor that sells to the general public. Manufacturers such as Halyard (Kimberly Clark) and Cardinal are well known. Insist on []. Here''s a []. These Level 2/3 masks look good.Made in the US too: []. N95 > KN95 or KF94 on [] > real [] surgical mask > everything else (better than nothing) TLDR: these don''t look very effective. These masks fall in the category "better than nothing".
我家也有类似kn95，和你的一样，上面不少打压的点点杠杠，特别是点点处，看起来太薄了，不太放心，总觉得会透气
不知道有没有了解的朋友解释一下
byd的N95上面也有，我也是看着不放心。不过推测应该是不透气的
这也挺神的一个评价都没有，你怎么找到的？
勤劳的搬运工： Here''s a couple good sources for reusable respirators. These are the best option in terms because they''re proven to be effective and they can be reused for weeks/months when used in rotation: [] [] The Powecoms have a 20% code (thx to karenjang): 2021
The Dr. Puri also have a 20% off code: welcome2021
When used in rotation of 5-7 days, a N95/KN95/KF94 doesn''t need to be tossed until it''s soiled, damaged, or becomes difficult to breathe through. For me, that''s about 40-50 hours. https://www.sages.org/n-95-re-use-instructions/ https://sharedhealthmb.ca/files/e...-masks.pdf https://www.health.nd.gov/sites/w..._Guide.pdf
If you absolutely have to have something disposable, then REAL surgical masks are available too. For surgical masks (the real ones at least) it''s difficult to find a reliable vendor that sells to the general public. Manufacturers such as Halyard (Kimberly Clark) and Cardinal are well known. Insist on []. Here''s a []. These Level 2/3 masks look good.Made in the US too: []. N95 > KN95 or KF94 on [] > real [] surgical mask > everything else (better than nothing) TLDR: these don''t look very effective. These masks fall in the category "better than nothing".
看了这个新闻报德国疫情，政府官员戴着。
我曾经做过fitting test，他们有很多不同的尺寸和品牌的口罩，会让一个一个测试，最后找到一个合适的品牌和尺寸
mm这个戴着舒服吗？
我在这儿买的保维康。https://bonafidemasks.com/
我感觉质量还行。但是国内也有过报导说保维康细菌超标啥的。