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What are the symbols for China 4, China 5, and China 6?

3 Answers
SanSienna
07/29/25 10:20am
The symbols for China 4, China 5, and China 6 are China IV, China V, and China VI. Here is some information about automotive emission standards: 1. Introduction: Automotive emission standards refer to the national regulations established to limit the production of harmful gases such as CO (carbon monoxide), HC+NOx (hydrocarbons and nitrogen oxides), and PM (particulate matter, soot) emitted from vehicle exhaust. 2. Overview: Automotive emissions refer to the harmful gases such as CO (carbon monoxide), HC+NOx (hydrocarbons and nitrogen oxides), and PM (particulate matter, soot) emitted from vehicle exhaust. 3. Standards: To curb the production of these harmful gases and encourage automobile manufacturers to improve their products to reduce the sources of these emissions, both Europe and the United States have established relevant automotive emission standards.
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LaAndrew
08/13/25 2:00pm
As a seasoned master in the auto repair shop, the National 4, National 5, and National 6 labels actually refer to the emission standard levels for vehicles in China. These labels can usually be found on the vehicle's environmental compliance sticker, which is affixed to the lower right corner of the front windshield, clearly marked with 'National IV', 'National V', or 'National VI'. National 4 was introduced around 2013, mainly for older vehicle models; National 5 was implemented in 2017; and National 6 is the latest standard post-2019, with the strictest emission requirements, significantly reducing exhaust pollution. If you want to know which standard a vehicle belongs to when purchasing or during annual inspection, you can check the environmental information page on the vehicle's registration certificate, where it will also be clearly indicated. Remember, choosing a National 6 vehicle is not only environmentally friendly but also helps avoid traffic restrictions in big cities, as many now only allow National 6 and above vehicles into the city center.
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DelJesse
10/07/25 4:25am
I'm a veteran driver with 15 years of experience. The China 4, China 5, and China 6 labels are those small stickers issued by environmental authorities for vehicles. They're affixed to the windshield, with different colors and clearly marked numerals indicating the emission standard (e.g., China 5 might be a blue background with 'V', while China 6 shows the newer 'VI' mark). These standards directly affect exhaust emissions - China 6 being the cleanest, offering better fuel efficiency and environmental protection. My previous car met China 4 standards, and when I upgraded to a China 6 model, annual inspections became noticeably smoother. Always check this label during routine maintenance to avoid accidentally driving into restricted zones and getting fined.
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