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    Daily protective masksThese masks should meet the technical specifications of GB / T32610 2016 daily protective masks. According to the protection effect from high to low, it is divided into 4 levelsA level, B level, C level, and D level.

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    2. After wearing the mask properly, you should update the mask when you smell the peculiar smell or feel poor breathing. store in a place away from light, ventilated and dry, and at a suitable temperature. [execution standard] GB 2626 2006