I work for Airbus, the position is N2, the third floor from the top, and I have been training for about half a year. I believe I can answer your question. I visited the Lufthansa Bombardier Maintenance Center of Lufthansa in Berlin and discussed the maintenance with the person in charge. In the meantime, there is no general statement about showing me the training experience and personal files of its personnel.

Moreover, the maintenance of Airbus aircraft and Boeing aircraft requires professional training, and their training qualifications are not universal. The training contents and qualifications of manufacturing and maintenance are also different, so they cannot be used universally. Of course, it is unknown how domestic airlines and manufacturers manage aircraft, but Europe is very strict in personnel management. Repairing a fighter doesn't mean you can touch a passenger plane. Repairing a passenger plane doesn't mean you can build an airplane. Building an airplane doesn't mean you can draw an airplane. Repairing an Airbus plane doesn't mean you can touch a Boeing plane. FAA and EASA have strict and systematic management of aircraft (including structure, engine and avionics system) and their corresponding qualified personnel.

However, employees in this industry also have corresponding advantages, that is, the entry threshold is very high (craftsmen live by craft, and the older they are, the more valuable they are). Once they enter a well-off life, they can basically guarantee it. If they are good at foreign languages, once the aviation market in China is opened, they will be waiting for the high salaries of Northwest Airlines, United Airlines or Lufthansa and Air France.