The query method of etc is as follows: Open the search bar in the mobile phone WeChat, then enter the official account name of local ETC WeChat, such as Chongqing ETC, Guangdong ETC, etc, and click Follow. To enter the official WeChat account, you can click Add More Accounts, click "Bind User Account", then fill in the user name, ID number and other information, and then click "Bind ETC Card Account" to enter the ETC card number, license plate number and other information to complete the binding. After the account is successfully bound, return to the home page and click "My Service" to query "Monthly Bill" to view the details of ETC charges in the current month. The following is the related information of ETC: Classification: As the current ETC cards are divided into three different types: ETC prepaid cards, ETC stored-value cards and ETC credit cards, all car owners can check whether the balance or authorized amount in the ETC card is enough before boarding the expressway, so as to avoid being blacklisted due to overdraft charges when entering the ETC of the high-speed toll station, and then they need to delete the blacklist before resuming use. Million car purchase subsidy