Science and engineering do have higher requirements for mathematics, and mathematics must be tested in the postgraduate entrance examination. As for your major, unfortunately, my major is also a kind of design, but we don't call it a designer, we call it an engineer, so you can guess what I'm about. We studied three mathematics, namely calculus, matrix and probability. This should be the most demanding mathematics difficulty in the university except mathematics major. Do you think you can accept it? Mechanical accidents should also be these three courses, and the information may be better, but this kind of major requires extremely high English, so you should pay attention. As for chemistry, I'm not sure. However, according to my experience in chemistry summer camp, there is nothing too high for mathematics, but learning chemistry requires a lot of logic. Learning mathematics well is very helpful to cultivate logical thinking.