What kind of company is thermoelectric company, and what does it mainly do?

It is a coal-fired power plant, which is no longer called a factory, but has been upgraded to a company. Almost all the original small power plants have been acquired.

There are five major power generation companies in China, namely China Guodian Group, China Datang Group, China Huaneng Group, China Huadian Group and China Power Investment Group.

Is to invest in power plants and operate power plants.