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Is the purification method of the household fresh air system selected for physical filtration or electrostatic dust collection? Consumers who don't know much about the household fresh air system will inevitably encounter questions in choosing the appropriate model and its purification method. from the current market, the air filtration method of the household fresh air system is seen, the following five technologies are used in the fresh air system for PM2.5 filtration:1. physical filtration: an efficient HEPA filter is used to intercept harmful particles in the air entering the room.2. electrostatic dust collection: the principle of high-pressure electrostatic adsorption is used to remove particulate pollutants in the air. Advantages: low maintenance costs later. Disadvantages: high one-time investment, unstable performance, trace ozone and certain potential safety hazards. The dust collection module needs to be cleaned regularly, otherwise the dust collection capacity will be lost.3. catalytic t

The oil film suction head of the fish tank filter should be on the water or under the water 50 The oil film suction head of the fish tank filter should be a device that can float with the height of the water surface within a certain range.