Mask

Importance Of The KN95 Mask In The Situation Of Corona Virus

As the COVID-19 pandemic enters its third month in the United States, one of the simplest pieces of medical equipment is in desperately short supply: medical-grade protective facemasks, typically engineered and specified for a single-use only. Now, to meet the basic and rapidly heightening need, Chinese and American designers are concocting new techniques for purifying […]

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