2. Call relevant hotlines for enquiry: hotlines have been set up in some areas to provide enquiry service for environmental protection list of trucks. Just call the hotline and provide relevant information to the staff, which is helpful for inquiry.
3. Inquire on the motor vehicle environmental protection network: You can log on to the motor vehicle environmental protection network and click on the public inquiry platform to inquire about the automobile emission stages of regular production and sales and import sales.