Yes According to the relevant information of Tianjin University, the mailbox of Tianjin University will be recovered after graduation. Tianjin University, called Tianda for short, is located in Tianjin. It is the first batch of national key universities and vice-ministerial universities directly under the Ministry of Education. It is also the first batch of "world-class A universities" and the first batch of "2 1 1 Project" and "985 Project". Selected as one of the national "Strong Foundation Plan", "20 1 1 Plan", "KLOC-0/1Plan", "Excellent Engineer Education and Training Plan", National College Students' Innovation Experiment Plan, National College Students' Innovation and Entrepreneurship Training Plan, National High-level University Construction Postgraduate Plan, and Old Eight Schools Construction.