The titles of assistant engineers and engineers depend on the regulations of the local personnel bureau or office. Evaluation or examination, but also 2-5 years of work experience after graduation from college or undergraduate.
The determination of work experience is calculated according to the graduation time that you meet the registration conditions. For example, if you graduate from 20 1 1 undergraduate course, then the earliest registration time for a first-class constructor is 20 15, and the work experience issued by the unit for several years proves invalid.