How can the sand not enter the filter? You can use precipitation to precipitate the sand and then filter it with a filter bag. The sand is inside the filter bag.
The installation of the fresh air system is mainly to deal with smog, but some people say that the effect of the fresh air system filtering pm2.5 is not as good as empty. how should ordinary consumers choose? The air purifier is repeatedly filtered for indoor air circulation,The aidishi fresh air system is a filter for the fresh air sent into the room,So if you look at the filter effect alone,It is true that the air purifier is better.However, the parameters affecting indoor air quality are PM2.5. TVOC, CO2 concentration and bacteria, etc,The fresh air system can solve the parameters affecting indoor air quality in all directions.1. the appropriate domestic fresh air system should be selected according to the demand.When choosing a household fresh air system, we should consider various factors such as the area, pattern, use environment and effect to be achieved,One step in place.The whole heat exchanger system can be selected without the need to purify indoor air;If indoor air needs to be purified, the fresh