How to Identify the National Emission Standard of a Vehicle?
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Methods to identify the national emission standard of a vehicle include: 1. Checking the vehicle's factory certificate; 2. Determining based on the year the vehicle was registered; 3. Taking the vehicle registration certificate to the DMV for inquiry; 4. Checking the vehicle's environmental protection label; 5. Logging into the website of the Motor Vehicle Exhaust Pollution Supervision and Management Center for inquiry. The national emission standard refers to the regulations on the content of harmful gases such as carbon monoxide, hydrocarbons, nitrogen oxides, particulate matter, and soot emitted from vehicle exhaust. The aim is to reduce and prevent environmental pollution caused by vehicle emissions, protect the ecological environment, and ensure human health.