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The filtration efficiency of KN95 masks: the filtration rate of non-oily particulate matter is more than 95%.
KN95 mask storage: storage temperature is 20 degrees to 38 degrees, storage temperature is less than 83%. It should be stored in a well-ventilated, dark and dry environment, away from fire and pollutants. Validity: three years.
Protective masks can effectively filter and filter dust and particles to help protect the respiratory tract; rich, comfortable, and breathable foam, fixed well, to prevent movement.
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