[Working principle of car fresh air grille]:
The car fresh air grille filters dust, odor and harmful gases in the outside air through materials such as filters and activated carbon to ensure fresh air in the car.
[Maintenance method]:
1. Regular replacement: According to the usage, regularly replace the filter and activated carbon to maintain the filtration effect.
2. Regular cleaning: Clean the grille surface regularly with a vacuum cleaner or a soft brush to keep the ventilation unobstructed.
3. Avoid collision: Avoid external collision or friction on the grille to keep it intact.
