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Why did this mask fail?
Wellbefore makes great masks. When we tested this model we were impressed by the build quality, fit, and filtration. The only issue was that the earlier models of this KN95 failed to have the standard GB 2626-2019 printed on the mask.
The newer versions are now completely up to standard, which is why we are now comfortable marking this as a mask you should buy.
Country of Origin
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