The first large-scale indoor air quality comparison test in China was conducted by 22 consumer associations and lasted for more than three months. The experimental report shows that among the 43 in-use vehicles of 25 brands (including imported brands), only 3 samples have excessive concentrations of volatile organic compounds, and the air quality of other samples is generally good, with a compliance rate of 93.02%.
According to the experience of being a student, it is absolutely excellent to get a score of over 90. The air quality in the car is so high that it should be considered good and gratifying. However, considering the background that automobile air pollution is constantly being reported and people's complaints are increasing, such an "excellent" report card makes people feel a bit empty.
We know that according to the statistical principle, the more vehicles are sent for inspection, the more scientific and accurate the test results will be, and this time there are only 43 vehicles, which reduces the credibility; Moreover, this test is based on the officially implemented "Guide to Air Quality Assessment in Passenger Cars", which only requires testing the concentrations of eight common volatile organic compounds in cars, including benzene, toluene and formaldehyde, which are much less than those in developed countries such as Europe, America and Japan. In fact, it is known that there may be hundreds of harmful substances in the air inside the car. Obviously, just like simple test questions, students' test scores will be excellent, and the success rate of indoor air quality comparison test is high. It is easy to suspect that this is related to low testing standards.
Of course, "simple questions" are not just theoretical speculation. A professional who has been engaged in indoor air testing for many years said that he tried to strictly test some vehicles according to European and American standards, and none of them were qualified. On this basis, he pointed out that the pass rate of this comparative experiment was "excellent" and was suspected of being "improved" to some extent. Once the word "quilt" highlights human factors, people can vaguely see the shadow of the manufacturer behind the vehicle for inspection in addition to reducing the subjectivity of the standard. In order to get the best, at least in order not to be caught, it is not impossible for manufacturers to choose and deal with vehicles when sending them for inspection.
As soon as the "shadow of the manufacturer" appears, the problem becomes complex and close to the essence. In fact, "the shadow of the manufacturer" can not only affect the test scores, but also affect the test propositions and even the test rules. With China's rapid entry into the automobile society, consumers have paid more and more attention to the air quality inside cars in recent years, but domestic automobile manufacturers have not followed suit. For "invisible" vehicle air pollution, most of them pretend to be invisible. In order to reduce costs, some manufacturers have relaxed their control over the supply chain and allowed materials or parts that do not meet environmental standards to enter the production line. The laissez-faire attitude of manufacturers is because there is no mandatory constraint of relevant laws and regulations in China at present, and the lack of laws and regulations is also largely related to the uncooperative, negative response and even confrontation of manufacturers when formulating relevant policies and regulations. People can see that the long-awaited "Guide to Air Quality Assessment in Passenger Cars" is only a "guide", which is only recommendable and not legally binding, and has little effect on improving the pollution problem inside the car when getting off.
However, no matter how the "shadow of the manufacturer" causes trouble, it can only be a "shadow" after all. No matter how hard the interest groups represented by vehicle manufacturers try to delay the introduction of mandatory laws and regulations, they can't stop the general trend of indoor air quality legislation in the end. But the driver of the general trend is not only the supervision department of the automobile market, but also the consumers who win by quantity and have the authority of "God" are the source of potential energy. In fact, the domestic automobile consumption culture is not mature now, and many consumers do not pay enough attention to indoor air quality, which objectively and externally reduces the pressure on manufacturers and makes them neglect the improvement work intentionally or unintentionally. Therefore, in order to change this situation, the first thing consumers should do is to correctly understand the value of vehicles, and treat the air quality inside the vehicles as a major event related to their own health and rights. If there is a problem of excessive pollution, they should boldly expose it, form external pressure from market feedback to car companies, and promote its development in a benign direction to the market.