I would like to ask what conditions are needed to immigrate to New Zealand or Denmark, and what is the process?

In your present situation, going abroad is a bit of a waste of time for you. If the job is good, you should consider staying in China for development.

It is easier to immigrate to New Zealand than to Denmark.

1. Now there is a kind of visa called a working holiday visa with relatively low requirements.

See: http://www.immunization.govt.nz/Migrator/stream/work/workingholiday/

2. Studying abroad, with a domestic university diploma and a high level of English. You can take the IELTS test in China first and come here directly to study for graduate students. You can immigrate directly without a job, but the cost of studying abroad is more expensive.

As long as you graduate from a school in New Zealand, you can be an electrician yourself.

But it is not easy for a registered electrician to pass the exam. Registered electrician has a high salary and the right to sign.