Mainly (one of the following circumstances)
(a) to reach the standard hours stipulated in the formal primary training of this occupation, and to obtain the graduation (completion) certificate.
(two) engaged in this occupation for more than 2 years.
(3) The professional apprenticeship expires.
Intermediate (one of the following)
(a) 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 standard hours stipulated in the formal training of this occupation, and has obtained the graduation (completion) certificate.
(2) Having worked in this occupation for more than 5 years after obtaining the primary vocational qualification certificate of this occupation.
(3) Obtaining a vocational graduation certificate from a 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)
(a) 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 reached the standard hours stipulated in the formal training of this occupation, and has obtained the graduation (completion) certificate.
(2) Having worked in this occupation for more than 7 years after obtaining the intermediate vocational qualification certificate of this occupation.
(3) Obtaining a vocational graduation certificate from a senior technical school or a higher vocational school recognized by the administrative department of labor and social security for the purpose of cultivating advanced skills.
(four) college graduates who have obtained the vocational intermediate vocational qualification certificate have been engaged in this occupation for more than 2 years.
Technician (one of the following conditions)
(a) after obtaining the senior vocational qualification certificate, he has been engaged in this occupation for more than 5 years continuously, and has been trained by this professional technician to reach the required 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.
(three) the graduates of this major in senior technical schools have been engaged in this occupation for more than 2 years after obtaining this occupation qualification certificate.
Senior technician (meet one of the following conditions)
(a) after obtaining the professional qualification certificate of the professional technician, he has been engaged in the professional work for more than 3 years, and has been trained by the professional senior technician to reach the required number of hours, and has obtained the graduation (completion) certificate.
(two) after obtaining the professional qualification certificate of this professional technician, he has been engaged in this professional work for more than 5 years.