At present, it is generally necessary to participate in training to take the exam, and to pass a series of relevant exams by the Quality Supervision Bureau to get the certificate. If the technology is excellent, you can also ask me to do it directly, which saves a lot of things. If the technology is not home yet, you should go for further study. After all, it is not a joke for special industries, and it is very convenient to do it directly. Just prepare the information for me. It's very cheap. Please refer to the consultation of each subject of the respondent.