Those of the Ryongsong Machine Complex strive to produce compressors for coal mines in cooperation with the members of the February 17 Shock Brigade of Scientists and Technicians.

The Taean Heavy Machine Complex produces in a responsible manner the custom-built equipment needed for the capacity expansion and modernization of industrial establishments in electric power and metallurgical industries and for regional-industry factories.

The Ranam Coal-mining Machine Factory produces and supplies the mining equipment in good time.

The Anju Pump Factory is speeding up the production of various kinds of pumps, and the Rakwon Oxygen Separator Factory of the Rakwon General Machine Enterprise is pushing ahead with the production of air conditioners.

Similar successes have been made by the Tongrim Mining Machine Factory and other industrial establishments in the sector of machine-building industry.