What is the major of Ruian Tangxia Second Book?

CNC major, auto repair major. Numerical control generally refers to computer numerical control. Computer numerical control is a kind of numerical control system, which uses a special computer that can store programs to perform some or all basic numerical control functions. The main courses of auto repair major include mechanical design, mechanical inspection, mechanical manufacturing technology, mechanical design, metal technology, electrical principle, engineering drawing, electronic technology, automobile introduction, automobile structure, automobile electronic and electrical equipment.