How do vehicles check emission standards?

Check the vehicle emission standards as follows: 1. You can check the vehicle manual: generally, there are notes on the environmental protection green label and the vehicle parameters on the vehicle certificate. 2. Check the nameplate under the passenger door: you can get the vehicle model above, then enter the vehicle environmental protection network, and enter the vehicle model in the input box of the webpage to find out the vehicle emission standard. The following is an introduction to automobile emission standards: 1. Automobile emission standards refer to the regulations on the contents of harmful gases such as CO, HC+ nitrogen oxides and PM (particulate matter, smoke and dust) emitted from automobile exhaust. 2. The waste gas contains 150 ~ 200 different compounds. Because the emission of automobile exhaust is mainly between 0.3m and 2m, this is just the breathing range of human body, which is very harmful to human health. Among them, carbon monoxide, hydrocarbons, nitrogen oxides and solid suspended particles are the most harmful to people. 3. China's automobile emission standards have been updated to reduce the environmental pressure. In 20 17, the national five standard was officially implemented, and it will enter the world of national six in 2020. Moreover, the national six standards for light vehicles were implemented step by step, and two emission limit schemes, National Six A and National Six B, were set, which were implemented in 2020 and 2023 respectively.