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What is the car PM2.5 filtration device?

1. Introduction vehicle PM2.5 filter means

refers to the atmosphere PM2.5 diameter less than or equal to 2.5 micron particles, also referred to as particulate matter into the lungs. Its diameter is less than the thickness of a human hair 1/20. Experience fine particles have a greater hazard to persons, especially sensitive people, so some manufacturers will install PM2.5 filter means in the car, there are two, one is integrated in the vehicle air conditioning system, another external type is integrated in the front center armrest.

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