What factory can a boiler worker enter?

Steel mills, chemical plants, heating companies and power plants will recruit. Hiring boiler workers requires professional and well-funded heating companies, which must be registered in government departments and approved by the company. The above-mentioned companies just meet the recruitment needs, so they can enter the above four factories. Boiler workers are also firefighters, that is, workers who burn boilers, responsible for the daily maintenance and operation of equipment in the station and the operation and maintenance of boilers.