Xiaomi Smart Air Purifier 4 Pro Filter

A primary filter, Xiaomi's High-Efficiency Filter, and a high-quality activated carbon filter work together to purify your air and keep you healthy,The primary filter provides an initial filtration by filtering dust, hair, pet hair, cotton fibers, fine crumbs among other large particles, and is resistant to creases, oil, acids, alkalis, and more to ensure long service life.