What does the China 6b emission standard mean?
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China 6 vehicles are cars that meet the national sixth-stage motor vehicle pollutant emission standards. The China 6 emission standard is an upgraded version of the current China 5 emission standard, imposing stricter and more scientific requirements on vehicle exhaust emissions. Different emission standards have varying limits for vehicle pollutant emissions. From China 1 to China 6, the emission limits for vehicle exhaust pollutants have become increasingly stringent. The China 6b standard requires: 1. Carbon monoxide emissions per kilometer driven must not exceed 500mg. 2. Non-methane hydrocarbon emissions per kilometer driven must not exceed 35mg. 3. Nitrogen oxide emissions per kilometer driven must not exceed 35mg. 4. PM (particulate matter) emissions per kilometer driven must not exceed 3mg.