Tsinghua University Bauhinia Student Apartment Building 11-13 Comprehensive Maintenance And Renovation Project, Bauhinia Student Apartment Building 14 Comprehensive Maintenance And Renovation Project, South District Student Dormitory Building 2 Comprehensive Maintenance And Renovation Project, Science Building And Advanced Research Center Comprehensive Maintenance And Renovation Project, Bauhinia Student Apartment Building 1-3 Comprehensive Maintenance And Renovation Project Full Process Tracking And Auditing Service Public Tender Announcement