Excellent clean room sandwich panel manufacturer: Bag air filter also called pocket air filter, with unique bag structure assurance. The material is generally non-woven fabric, that the air flow is even filled through the bag, education resistance and increases dust tolerance. It is generally used in areas with less strict cleanliness requirements, such as offices, hotels, workshops, factories, etc. After passing through the bag medium efficiency air filter, air can be directly sent into the room. It can also be used in areas with high cleanliness requirements, installed in the previous stage of the high-efficiency filter, extend the service life …