CBC News published this video item, entitled “How to tell if your respirator and N95-style mask is counterfeit or poor quality (Marketplace)” – below is their description.
CBC Marketplace tested KN95 and KF94 masks sold online and at big box stores. Half of them didn’t offer the level of protection they’re supposed to, according to the lab test results.
To read more: http://cbc.ca/marketplaceCBC News YouTube Channel
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