We in China first built two networks in Haicheng, Liaoning and Suzhou Industrial Park.
A few years ago, the Jiangsu power grid vigorously promoted a burst of 110/20kV substations, but now has basically stopped building new ones, and is currently underway in the Zhejiang power grid.
As for what is used in the premises, it is no different from a 10kV transformer, industrial and mining enterprises, residents, government departments, schools, where can be used.