When Will China IV Emission Standard Be Implemented?

[Elena]

China IV emission standard was originally scheduled to be implemented on January 1, 2010. For diesel vehicles over 3.5 tons, the China IV standard was postponed for two years; for diesel vehicles under 3.5 tons, it was delayed for three years, with the China IV standard being implemented on July 1, 2013. Introduction to China IV Emission Standard: 1. The China IV emission standard is the fourth stage national standard for motor vehicle pollutant emissions. 2. The main pollutants emitted by vehicles include HC (hydrocarbons), NOx (nitrogen oxides), CO (carbon monoxide), PM (particulate matter), etc. Through the application of technologies such as improved catalytic converter active layers, secondary air injection, and exhaust gas recirculation systems with cooling devices, the standard aims to control and reduce vehicle emissions below specified limits. 3. The "Standardization Law of the People's Republic of China" categorizes Chinese standards into four levels: national standards, industry standards, local standards (DB), and enterprise standards (Q/). As of the end of 2003, China had a total of 20,906 national standards (excluding engineering construction standards).