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Sep 24, 2020 · Sept. 24, 2020 -- Up to 70% of N95 masks certified in China do not meet U.S. standards for effectiveness, the nonprofit patient safety organization ECRI warned this week.COVID-19:KN95 face masks from China don't meet Sep 22, 2020 · N95 masks have head and neck straps; KN95s have ear loops. Whats important to realize is that its the tight-fitting seal on your face that gives the N95 superior protection, other than the