Can you please provide some sources for that claim?
For example [1] says that the lowest, starting salary is already over 3000. And the salaries for teachers grow with work experience.
[1] https://notesfrompoland.com/2022/10/12/polish-teachers-among...
Family who are teachers - but I guess the bottom of the scale has increased now, that's my mistake.
Also observe how the top of the scale is 64578PLN/year, and according to the article, teachers reach that level in about 20 years on average. So even after working in the profession for 20 years, you don't reach the average wage for your country when working as a teacher.
I suspect that you do reach the average salary as an experienced teacher.
The unemployment rate is very low, so to be able to hire factory employees you'd realistically need to offer at least 5000 PLN (~1000 USD) in gross salary.
You'd have a much better chance to open such factory in Spain or Portugal, the salaries are similar, but you'll have an easier time hiring + green energy from sun.
Europe's minimum wages are much higher in comparison[3].
[1]https://en.wikipedia.org/wiki/Minimum_wage_in_China
[2]https://www.india-briefing.com/news/guide-minimum-wage-india...
[3]https://en.wikipedia.org/wiki/List_of_European_countries_by_...
I just checked job postings in Bulgaria(the poorest EU country) and $11k is just a bit above entry level salary for unskilled uneducated manufacturing workers. It's higher with taxes, experience, etc. and there's a lot of better options at that level.
And the truth is even if you can find cheap employees in Albania, Bulgaria, Belarus, Macedonia, infrastructure is not there and investment wouldn't make much sense because there's not a lot of people here that are okay with such low wages.
https://topsourceworldwide.com/international-salaries/
note that China is 40% of salary as a payroll tax, which tops the list.
What you term "socialistic" countries handle government services via taxes more than levies on employers.
It looks like the employer cost in China is 40.92%[0], while the highest percentage in Europe is 32.4% in Italy, and Switzerland imposes only 9.5%.
You'd be well bellow the gross average everywhere in the EU, even the poorest countries. Outside of the EU you might have a shot in Albania or Moldova, but you'd lack all the infrastructure and stability you'd need for large scale manufacturing.