It depends on the school syllabus.
On Polymer Materials and Engineering Postgraduate Entrance Examination
Generally, colleges and universities that are partial to engineering have to take exams: English, politics, advanced mathematics (compulsory exam)+a professional course.
For example: Zhejiang University, South China Institute of Technology, Donghua Institute of Technology. ...
Colleges that are partial to science should take the exam: English, politics+two specialized courses (materialization, organic, high quality, high quality ...)
For example: Nanda, Fudan, Jiaotong University, HKUST.