The factory entrance examination generally tests basic knowledge, safety knowledge and factory regulations! If it is a job on a production line, you only need a junior high school education, and the exam is very simple, usually just a process. In addition, it depends on what you want to apply for: ordinary workers don't have to take any exams, and some may be younger women workers, because most of them are more detailed jobs (such as plug-ins), which require ingenuity and high efficiency. To be a debugging and maintenance worker, you generally need to graduate from electronics or have more than one year's experience in electronic maintenance. You can identify basic components in the interview and use a multimeter. If you want to do design, you should at least graduate from college majoring in electronics, take an examination of the use of multimeter and oscilloscope, the proficiency of drawing software, the application ability of assembly and C, and of course, you often give a test paper a limited time to answer.