Which Year's Cars Comply with China IV Emission Standards?

[VanXavier]

China IV emission standards apply to vehicles manufactured between 2011 and 2017. Below is relevant information about China IV emission standards: 1. Definition: China IV emission standards represent the national fourth-phase limits for motor vehicle pollutant emissions. Major automotive pollutants include hydrocarbons, nitrogen oxides, carbon monoxide, and particulate matter. These standards require controlling and reducing vehicle emissions below specified thresholds through technologies such as improved catalytic converter active layers, secondary air injection systems, and cooled exhaust gas recirculation systems. 2. Existing Issues: While promoting environmental protection and energy conservation remains a key national policy, significant challenges to corporate interests inevitably encounter resistance. As state-owned enterprises, Sinopec and PetroChina cannot be effectively constrained by governmental "standards". Consequently, emission control pressures primarily target more market-oriented automobile manufacturers, which explains why the automotive industry bears disproportionate responsibility for emission compliance.