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  • August 15 2022

    4 minutes, 17 seconds
    641 0 0 0 0/5

    As we all know, we spend most of our time indoors, which means that our health is constantly at risk from a number of pollutants. For example, formaldehyde, the main pollutant, may temporarily meet the standard, but because it has a volatility period of 3-15 years, and there are many sources of rele...