PURE air filter uses multi-layer gradient filtration technology to effectively intercept 99.2% of particles above 5 microns, blocking sand, dust, pollen and other impurities from corroding the engine from the source. Through dynamic airflow simulation optimization design, the drag coefficient is reduced by 15% while ensuring the air intake volume, avoiding the decrease in fuel efficiency caused by insufficient air flow. Covering 95% of the world's passenger cars and construction machinery models, it provides 15 types of sealing ring specifications for flexible matching, ensuring seamless compatibility with the original filter box.