(1) Have worked in the same occupation for more than two years continuously or accumulated for more than four years;
(2) Graduation from primary training.
2, have one of the following conditions, can apply for intermediate workers:
(1) It has been three years since he obtained the certificate of applying for the rank of professional junior worker: type of work;
(2) to obtain the primary level certificate of professional work and complete the training of intermediate workers;
(3) graduated from institutions of higher learning and secondary specialized schools and engaged in occupations (posts) corresponding to their majors.
3. Those who meet one of the following conditions may apply for senior workers.
(1) It has been four years since it obtained the intermediate grade certificate of declared occupation type;
(2) obtain the intermediate level certificate of the declared occupation type and pass the advanced level training;
(3) graduated from institutions of higher learning and obtained the certificate of declaration of vocational intermediate level. The theoretical examination takes the form of written examination, and the examination time is 120 minutes; Practical exercises are tested in the form of practical exercises, and the examination time is subject to the content of practical exercises.