-Main (one of the following conditions)

1) Reach the standard class hours specified in the formal primary training of this occupation, and obtain the graduation (completion) certificate.

2) have been engaged in this vocational internship for more than 2 years.

3) The professional apprenticeship expires.

-Intermediate (one of the following conditions)

1) After obtaining the primary vocational qualification certificate of this occupation, he has been engaged in this occupation for more than 3 years continuously, and has reached the required standard hours after the formal training of this occupation intermediate, and obtained the graduation (completion) certificate.

2) Having been engaged in this occupation for more than 5 years continuously after obtaining the primary occupation qualification certificate of this occupation.

3) Obtain the vocational graduation certificate of secondary vocational school or above recognized by the administrative department of labor and social security for the purpose of cultivating intermediate skills.

-Advanced (one of the following conditions)

1) After obtaining the intermediate vocational qualification certificate of this occupation, he has been engaged in this occupation for more than 4 years continuously, and has obtained the graduation (completion) certificate after reaching the prescribed standard hours through the advanced formal training of this occupation.

2) Having been engaged in this occupation for more than 7 years continuously after obtaining the intermediate vocational qualification certificate of this occupation.

3) College graduates who have obtained the intermediate vocational qualification certificate have been engaged in this occupation for more than 2 years.

4) Obtain this vocational graduation certificate from a senior technical school or a vocational school approved by the administrative department of labor and social security for the purpose of cultivating advanced skills.

-Technician (one of the following conditions)

1) After obtaining the senior professional qualification certificate, he has been engaged in the professional work for more than 5 years continuously, and has been trained by the professional technicians to reach the prescribed standard hours, and has obtained the graduation (completion) certificate.

2) Having been engaged in this occupation for more than 8 years continuously after obtaining the senior occupation qualification certificate of this occupation.

3) Graduates from senior technical schools who have obtained vocational senior vocational qualification certificates have been engaged in this occupation for 2 years continuously.

-Senior technician (meeting one of the following conditions)

1) After obtaining the professional qualification certificate of the professional technician, he has been engaged in the professional work for more than 3 years continuously, reached the standard hours stipulated by the formal vocational training of the professional senior technician, and obtained the graduation (completion) certificate.

2) Having been engaged in the professional work for more than 5 years after obtaining the professional qualification certificate of the professional technician.