Group 1 - The core issue faced by Guodian Power Development Co., Ltd. Daxingchuan Power Plant was related to the inability to submit VAT declarations due to a system error indicating that the taxpayer had not uploaded invoice summary confirmation information [1] - The tax authority in Antu County responded promptly to the company's request for assistance, implementing a "Question and Handling Collaboration" service mechanism to guide the company in submitting the necessary declaration materials [1][2] - The tax authority successfully resolved the issue on the same day by optimizing the connection method of the Leqi platform and the invoice operation process, allowing the company to complete its tax declaration and payment [1] Group 2 - Antu County Tax Bureau has established a "Rapid Response Mechanism for Enterprise Issues" to dynamically address sudden problems, ensuring timely reception of enterprise requests through various channels [2] - The tax bureau has resolved over 50 various requests from taxpayers and helped solve more than 10 complex issues through cross-departmental collaboration [2] - The efficient resolution of issues has facilitated credit restoration for taxpayers, promoting "credit-for-loan" initiatives in 18 cases [2]