If you just want to work, congratulations. Polymers have a good employment prospect. There are also petrochemical, rubber and pharmaceutical products, and now the demand is basically in short supply. Postgraduate entrance examination is also relatively easy, and the scores of engineering materials are not high. Including Institute of Chemistry, Chinese Academy of Sciences. The most important professional courses for postgraduate entrance examination are physical chemistry and polymer chemistry, polymer physics and organic chemistry (see school). If you take an engineering course, it is a specialized course of mathematics 2+, and if you take a science course, it is two specialized courses. The best polymers are Sichuan University, Donghua Institute of Technology and Beihua University. Needless to say, Beijing Institute of Chemistry, Chinese Academy of Sciences. Cross-disciplinary efforts are not impossible. It depends on human efforts. One of my roommates was admitted to Beijing Normal University at international economic expense! There are basically two kinds of mathematics, only one is Tsinghua. Tongji university's mathematics textbook is a classic mess, and engineering mathematics can't surpass it at all.