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 standard hours after the formal training of this occupation intermediate, and 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, obtained by the administrative department of labor and social security audit, with intermediate skills as the training goal of secondary vocational school or above vocational graduation certificate.