Taiyuan University of Technology has no real ace major, only established majors, only key majors, only dominant majors, only national pilot majors, only provincial majors, that is, mechanical, chemical, polymer, electronics, electrical, safety and other majors. The trump card major must be a major with certain status and influence in the industry. Taiyuan Institute of Technology used to have ace major and weapon major in secondary schools, but now Taiyuan Institute of Technology has no ace major.