What is the title of municipal craftsman?

Craftsmen in big countries, if an inappropriate but similar metaphor is made, are equivalent to academicians in the field of skilled workers, because craftsmen in big countries are the top talents in the country in terms of skills. In the selection of craftsmen in big countries, provincial trade unions and national industrial trade unions recommend top craftsmen from all walks of life, and review 10 craftsmen for one year. China has more than 30 provincial administrative regions and dozens of industrial trade unions. The craftsmen of big countries are the top in all provinces, autonomous regions and industries.