Everything about Face Mask

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"Even though a surgical mask may be efficient in blocking splashes and huge-particle droplets, a face mask, by style and design, won't filter or block very little particles inside the air Which may be transmitted by coughs, sneezes, or selected medical processes," the US Meals and Drug Administration says http://coronavirus-mask32974.ka-blogs.com/48182496/disposable-mask-an-overview


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