I think Zhejiang Normal University is good. Because the strength of science majors such as mathematics in Normal University is relatively strong, the University of Science and Technology places more emphasis on engineering majors such as chemical engineering. Postgraduate entrance examination still depends on the major itself, after all, it is the deepening of this major. Besides, all universities in Zhejiang are similar except Zhejiang University, and we don't have to pay too much attention to the university ranking (this ranking is often a comprehensive ranking, not a mathematics professional ranking). Of course, as long as you are strong enough, you can get into a famous university, and you don't have to worry about whether you are in a university of technology or a normal university.

I hope it will help you, and I wish you an early success in the postgraduate entrance examination.