(1) 3Q mask, unit price: 24.5 yuan / piece, FDA, CE certification, NOISH US Food and Drug Administration certification, global circulation. (2) Dasheng masks, unit price 24 yuan / piece, FDA, CE certification, NOISH approved by the US Food and Drug Administration, global circulation. (3) 3M1860 mask, unit price: 37.3 yuan / piece.
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