When the air pressure is high in winter, I always feel that the concentration of pm2.5 outside is very high and the air quality is particularly poor. Usually dare not open the window for ventilation.

When the air pressure is high in winter, I always feel that the concentration of pm2.5 outside is very high and the air quality is particularly poor. Usually dare not open the window for ventilation. Is there any good solution? The best way to deal with toxic and harmful gases such as pm2.5 is the fresh air system. Compared with clean internal circulation, fresh air system is a better internal and external circulation, and it can also remove many harmful gases including formaldehyde. In fact, you can try Hui Technology's three constant systems, constant temperature, constant oxygen and constant humidity. The constant oxygen function and the effect of purifying pm2.5 are still very good. The most important thing is that the problem of keeping warm in winter has also been solved, which can save a lot of household appliances.