Recently, the Hebei Provincial Department of Housing and Urban-Rural Development organized expert review and determined that three scientific research projects of our company, "Research on Red Mud Base Matrix Polymer as Backfill Material for Road Base", "Research on Fly Ash Foundation Reinforcement Treatment Technology" and "Research on Key Technology for Identification and Repair of Urban Drainage Network Problems", were included in the guiding plan of Hebei Provincial Construction Science and Technology Research Project in 2022. This is our research project of new materials, new method and new technology in the direction of energy saving and environmental protection, which has won full affirmation and strong support from relevant government departments. We will carry out in-depth research work, complete the research tasks on schedule and strive to achieve high-level scientific research results.