And One country, two and so on until the fifth and most recent country to be implemented six-stage, this refers to are our requirements for vehicle emission standards at different stages.

The EU introduced in the early 1990s, the country's emission standards have been developed in accordance with EU standards to be implemented in our country 1 2001, so just different names. For example, now the country's five criteria, the full name of the country the fifth stage of motor vehicle emissions standards. Production at several stages of the country referred to the country a few car models.

A national standard on July 1, 2001 implementation of the country

States a standard, a standard reference in Europe, mainly for carbon monoxide, hydrocarbons and particulate emissions requirements finite value, 3.16 grams of carbon monoxide per km hydrocarbons to 1.13 grams per kilometer and the like. Emission standards to the country on a car belonging to a country, less so on.

Standard second year July 1, 2004 implementation of the country

In order to meet the Olympic Games, Beijing ahead of the implementation. Standard two countries with respect to a national standards on emissions standards is further improved, cycling 30?f the carbon monoxide reducing pollutant emissions, carbon oxides and hydrocarbons by 55 percent.

Country, three standards July 1, 2007 implementation of the country

Country, three cars in order to reduce pollutant emissions of the engine and exhaust system was upgraded and transformation in technology, increased vehicle for self-diagnosis system and catalytic upgraded. Pollutant emissions than the country, three two countries should be reduced by 40 percent.

China IV standards July 1, 2010 implementation of the country

Relative four countries in the country, three were upgraded exhaust after-treatment system, is pollutant discharge standards by 50 percent to 60 percent compared to the third country.

State five standard January 1, 2018 implementation of the country

2018 1st five years the country began to implement national standards limits on nitrogen oxides, hydrocarbons, carbon monoxide and suspended particles such as motor vehicle emissions more stringent. Compared to the national IV standards, to reduce nitrogen oxide emissions by 25 percent, also increased the limit of non-methane hydrocarbon emissions and PM, reduce air pollution, but also the prevention of haze.

For after the Six Nations will be implemented more stringent pollutant emissions than the country just before dawn is to reduce by about half. Such forcing car companies upgrade technology, along with the manufacturing cost of the vehicle will also be improved, the estimated cost per vehicle than now to enhance 5000-8000.