What is China IV in the automotive emission standards?

[DiGenevieve]

China IV in the automotive emission standards refers to China's National Phase IV Motor Vehicle Pollutant Emission Standards. It primarily utilizes technologies such as improved catalytic converters to further reduce harmful substances like hydrocarbons and carbon monoxide in vehicle exhaust. The higher the number, the stricter the standard, and the relatively lower the pollution from exhaust emissions. To curb the generation of harmful gases and encourage automobile manufacturers to improve their products to reduce the source of harmful emissions, both Europe and the United States have established relevant automotive emission standards. The European standard, which is slightly higher than China's national standard, serves as a reference for China's automotive emission standards. New domestically produced vehicles will indicate the European standard their engine exhaust emissions meet. The European standard is a common standard adopted by member countries of the European Community.