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The first four are physical factors, that is, the characteristics of the non-woven fabric produced by the melt blown method, the filterability is about 35%; this is not up to the requirements of medical masks, we need to electrotype the material and let the fiber Charged and used static electricity to capture the aerosol where the new
In China, the largest exporter of medical masks in the world, about 4,000 new companies have registered to manufacture or trade melt-blown fabric since the beginning of the year, according to Tian
Quietly, the ice began to melt, and water trickled from the clouds above. The loud and sharp crack of thunder tore the sky asunder, and the rain came in a fury. The downpour was great, clattering
Duststone, Awekia / 2:29PMBehind a wooden batwing swing door, a saloon stood in the sunlit town. Swinging with the in-and-out of soldiers, miners, ga