Just note no returns and the previous box from another company sold by has one review. Its negative. They said it failed the water test where you put water in the mask and it leaks. KN95 mask legit will not leak if you put water in it. Go to or where there are reviews. Look at negative reviews to see if any failed the leak test, flame test, or burn test. And why am I still at -1....I provide way too much valuable info. The one off has lots of sales. Not much negative but I hate when they make it private. Cant tell how good it is. No reviews on doing leak test.
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Thank you!