In accordance with the requirements outlined in the document "2023 Tianjin Municipality Gas and Heat Underground Municipal Infrastructure Survey Work Plan," issued by the Tianjin Municipal Public Utilities Bureau in March 2023, and following the work arrangements of the Tianjin Municipal Committee, Municipal Government, and Municipal Survey Office, our company conducted the survey and mapping of the existing pipeline network from April to August of the same year. We completed the "Urban Underground Engineering Pipeline Facility Survey Information Form - Gas" and organized and compiled the corresponding supporting materials. By the end of August, we had recorded the above materials onto a CD, which was then submitted to the Urban Management Committee of Xiqing District, Tianjin.