Group 1 - The article discusses the implementation of electronic invoices for toll fees in Inner Mongolia, starting from November, as part of a broader digitalization initiative in the ETC (Electronic Toll Collection) sector [2][3]. - The electronic invoices, labeled as "toll fees," hold the same legal validity as paper VAT invoices and can be used for reimbursement and tax deductions [2][3]. - Users can apply for electronic invoices through the ticket root service platform or the "Ticket Root" app, with a detailed process outlined for registration, card binding, and invoice issuance [4][5][8][9]. Group 2 - If there are errors in the issued invoices, users can apply for a red-letter electronic invoice through the same platforms, with specific procedures for different scenarios regarding confirmation of use or accounting [10][11][12]. - After issuance, users can query and download their electronic invoices via the ticket root service platform or the app, with options to view by application or travel details [13].