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Mar 16,2020 breathable muslin masks standards from wuhan#0183;Currently,of the 200 million masks China makes a day,only 600,000 are N95 standard masks,used by medical personnel,according to the NationalComparison of Mask Standards,Ratings,and Filtration Mask Standards and Effectiveness Bottom Line.Single use masks (normally one layer,very thin) are typically only effective at capturing larger dust particles,but can do so fairly well.Surgical mask standards have higher requirements for capturing virus-sizedChina Mask,Mask Manufacturers,Suppliers,Price Made-in China Mask manufacturers - Select 2020 high quality Mask products in best price from certified Chinese Medical Mask manufacturers,Face Mask suppliers,wholesalers and factory on
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