The Namhung Youth Chemical Complex has conducted a dynamic mass technological innovation movement to ensure the normal production of fertilizer with less coal.

Some iron ore producers invented and introduced technical innovations for the normal operation of equipment without using imported materials, thus cutting short the time of earth-scraping.

Officials and miners of the Kujang Area Coal-Mining Complex applied innovative methods to raise the tunneling speed and coal-carrying capacity while saving a lot of props and materials.

The Pyongyang Bearing Factory has turned the drive for economy into one for the employees themselves to increase production with the same amount of raw and other materials.

Several thermal power plants have introduced technical innovations to raise the combustion efficiency so as to save a lot of coal.