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At the end of 2016, the national fifth standard was popularized in an all-round way, and three years later, the era of the sixth grade was coming. Recently, the Beijing Municipal Bureau of Ecological Environment issued a draft for soliciting opinions, proposing to implement the sixth national emission standard step by step from July 1, 2019.

According to the draft for soliciting opinions, from July 1, 2019, heavy gas vehicles sold and registered in Beijing, as well as heavy diesel vehicles in the public transport and sanitation industry must meet the requirements of the national six-b standard. Since January 1, 2020, light gasoline vehicles sold and registered in Beijing and heavy diesel vehicles in other industries must meet the requirements of the national 6b standard, in which the light gasoline vehicles national 6b stage will be implemented step by step and the limit requirements.

Compared with the "national five standards", the "national sixth standard" is more stringent. For example, light vehicles have increased the emission limits of carbon monoxide, total hydrocarbons, non-methane total hydrocarbons, nitrogen oxides and particulates by about 30% and 50%, which are intended to significantly reduce pollutant emissions and reduce oil and gas volatilization.

Originally, the full implementation of the sixth national standard was set in January 2019, but due to various reasons, various provinces and cities have postponed the implementation of the sixth national emission standard one after another. Beijing, Tianjin, Hebei, Guangdong and other places have clearly proposed to implement the sixth national standard from July 1 this year.

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