Public transportation has become a new hidden danger site for new crown pneumonia infection, and the risk of transmission is high. There have been many cases of transmission and disease caused by bus, taxi, and subway transportation. During the epidemic prevention and control period, in addition to strengthening epidemic prevention and control management in the transportation field (such as seat spacing, reducing ticket sales, etc.), and reducing the risk of virus transmission in public transportation, driving has become the safest way of travel.

But is it really foolproof to travel by car?

In fact, although driving a private car can effectively reduce the probability of contact with patients with new coronary pneumonia compared with subways and buses, but because the car itself is a closed environment, once the passenger has an infected person, you may be infected. Sex is also greatly increased. Therefore, although driving is the safest mode of transportation to a certain extent, we must not ignore the necessary protective measures when driving a vehicle. In addition to the safety measures mentioned here, we still have to reduce close contact and keep wearing masks. How to solve the problem of increasing the probability of air transmission of the virus in a closed car environment from the source is more worth exploring, because this is not only during the epidemic. We need to consider safety measures. Outside of the epidemic, the indoor air quality of cars is also closely related to our health and comfort.

How to improve the air quality in the car? In-car air quality has always been the focus of consumers’ attention. The new car quality research (IQS) report of the world’s authoritative research organization J.D. Power shows that car interior odor has become the first dissatisfaction in the Chinese market for many years. The main factors affecting air safety in the car are: 1. Air pollution outside the car. Car exhaust, PM2.5, pollen and other harmful suspended particles sneak into the car through the car window or air conditioning system. 2. Interior materials. There are a large number of non-metallic parts that are easy to volatilize in the car, such as plastic door panels, leather seats, and damping panels. There are 8 common volatile organic compounds in vehicles, and clear limits are given for these 8 substances in the national standard GB/T 27630-2011 “Guidelines for Air Quality Evaluation of Passenger Cars”. Serial number project Restriction requirements (mg/m³)

1 benzene ≤0.11

2 Toluene ≤1.10

3 Xylene ≤1.50

4 Ethylbenzene ≤1.50

5 Styrene ≤0.26

6 formaldehyde ≤0.10

7 Acetaldehyde ≤0.05

8 Acrolein ≤0.05

In order to solve the peculiar smell in the car and improve the air safety in the car, it is necessary to increase the cycle purification link in the closed car environment, and there is no doubt that the car air conditioning filter has become an important responsibility. The car air conditioner provides the original power for the exchange of indoor and outdoor air, but in order to satisfy the purification of the indoor circulating air, the outdoor air enters the car after being filtered. The filter becomes an essential artifact for the car owner! The small body shows great power, creating a safe and reliable space in the car, allowing car owners to enjoy healthy breathing at all times. Editor’s reminder: In order to avoid secondary pollution of the car air conditioner filter, generally speaking, it should be replaced after two to three months of use (the specific replacement frequency can be considered according to the actual frequency of use)