1. Apply for buses and heavy trucks

2. Use the high quality the filter material to filter out fully the bacterium in air, the road dust and   harmful gas, reduce the interior personnel to breathe the fresh air, to protect the health of the people inside.

3. Filtration efficiency over 99.8%.

ROCKFIL produces wide ranges of air filters for Passenger cars, covering European vehicles, American vehicles, Japanese vehicles, Koran vehicles, such as Volkswagen, Mercedes-Benz, BMW, FIAT, Peugeot, Renault, GM, Ford, Chrysler, Volvo, Toyota, Honda, Nissan, Mitsubishi, Suzuki, Isuzu, Mazda, Hyundai, Kia, and others, more than 20 vehicle series.