There are several types of intermediate engineer certificates and what are the differences?

Personally, it is something to prove your own qualifications. Many units require an intermediate engineer title for recruitment, and you can also apply for a certificate, which can cost several thousand yuan a year. Municipal, municipal and Mechanical and electrical professional titles are more expensive, and certain large units also have professional title requirements for individual job promotions. For the unit, it helps improve the unit's qualifications, so many units will encourage employees to review professional titles. In order to improve their qualifications, a certain unit will recruit engineers from outside. It's the kind of affiliation where you get paid and don't have to work.