Is There a China 7 Emission Standard?

[CooperLee]

Currently, there is no China 7 standard. China's emission standards are divided into: China 1, China 2, China 3, China 4, China 5, and China 6. Below are the detailed introductions: China 1 Standard: Implemented nationwide on July 1, 2001, referencing Euro 1 standards, it mainly set limits for carbon monoxide, hydrocarbons, and particulate emissions, with carbon monoxide at 3.16 grams per kilometer and hydrocarbons at 1.13 grams per kilometer, etc. Vehicles meeting the China 1 standard are classified as China 1 vehicles, and so on for the following standards. China 2 Standard: Implemented nationwide on July 1, 2004. In preparation for the Olympics, Beijing implemented it earlier. The China 2 standard further improved emission requirements compared to China 1, reducing single-vehicle pollutant emissions of carbon monoxide by 30%, and hydrocarbons and carbon oxides by 55%. China 3 Standard: Implemented nationwide on July 1, 2007. To reduce pollutant emissions, China 3 vehicles underwent upgrades and modifications in engine and exhaust system technologies, including the addition of vehicle self-diagnostic systems and upgrades to three-way catalytic converters. Total pollutant emissions for China 3 were reduced by 40% compared to China 2. China 4 Standard: Implemented nationwide on July 1, 2010. Compared to China 3, China 4 upgraded the post-emission treatment system, reducing pollutant emission standards by 50% to 60% compared to China 3. China 5 Standard: Implemented nationwide on January 1, 2018, the China 5 standard imposed stricter limits on nitrogen oxides, hydrocarbons, carbon monoxide, and suspended particles from motor vehicle emissions. Compared to China 4, nitrogen oxide emissions were reduced by 25%, and additional limits were placed on non-methane hydrocarbons and PM emissions, aiming to reduce air pollution and combat smog. China 6: Enacted at the end of 2016, China 6 is hailed as the strictest standard to date. This standard no longer solely references European standards but introduces China-specific driving conditions while also drawing from U.S. standards.