What is the patent of Xiaomi automobile air conditioning filtration?

Automobile anti-fog air conditioning filter element. The patent of Xiaomi automobile air-conditioning filter is an anti-fog air-conditioning filter for vehicles, which is called "Intelligent multi-effect anti-fog air-conditioning filter for automobiles". The filter element has a disposable hot-pressed PP-PP pre-filter layer, which can effectively prevent larger particles from flying in, such as dust, hair, flocs and floating objects.