**Household air purifier composite material** is a **multi-layered composite filter media** specifically designed for high-efficiency air purification. It typically combines functional materials such as electret cotton, meltblown fabric, and activated carbon layers. Its core function is to **achieve comprehensive purification effects that single-layer filters cannot provide**, efficiently removing various pollutants like PM2.5, pollen, odors, and formaldehyde while maintaining relatively low airflow resistance. **Main applications include:** 1. **Household air purifiers** – serving as the core filter cartridge for indoor spaces such as bedrooms and living rooms; 2. **Desktop or portable air cleaning devices** – meeting rapid purification needs in small spaces; 3. **Post-fine filtration stages in fresh air systems** – providing deep purification after pre-filtered air; 4. **Environments with special air quality requirements** – such as nurseries, households with pets, or spaces occupied by allergy-sensitive individuals. This type of material balances **filtration efficiency, airflow resistance, and multifunctionality**, making it a key component in high-end household purification products.