Dr. Family KN95 Face Mask (Non-Medical)
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Why did this mask fail?
Country of Origin
A KN95 face mask is a type of respiratory protective equipment that is designed to filter out at least 95% of airborne particles, including viruses and bacteria. The acronym “KN95” stands for “Chinese standard for filtering efficiency” and refers to the Chinese national standard GB2626-2019 for filtering facepiece respirators.