**Automotive air conditioning electret cotton** is a low-resistance filter material specially designed for vehicle air conditioning systems. It uses electrostatic adsorption to efficiently capture **dust, pollen, exhaust particles, and some bacteria** from outside air. Its core function is to **ensure sufficient airflow and cooling performance with minimal resistance**, preventing reduced AC efficiency or increased energy consumption due to filtration. **Main applications include:** 1. **Passenger/commercial vehicle cabin air filters** – as the core filtration layer; 2. **New energy vehicle cabin air purification systems** – enabling smart filtration with sensors; 3. **Ventilation filters in specialized vehicle cabins** (e.g., construction/farm machinery); 4. **In-car air purifiers or ventilation modules** – as pre-filters or standalone cartridges. The material emphasizes **automotive-grade reliability** such as temperature/humidity resistance, anti-aging, and anti-mold properties, making it a key component for improving in-cabin air quality and ensuring occupant health.