The Taean Heavy Machine Complex and the Ryongsong Machine Complex have pushed ahead with the work to manufacture the custom-built equipment in quality and to update the main equipment.

The Jonchon Drill Factory manufactured medium frequency induction furnace, annealing furnace and high-frequency preheater and accelerated the updating of production processes in close combination with the work to produce rock drills with improved performance.

Officials and technicians of the Ryangchaek Bearing Factory strive to establish the process for ensuring accuracy in processing bearings and to manufacture bearing ball separator regarding it as an important link in the production of new and quality bearings.

The Pyongyang Electric Cable General Factory 326 propels the production of equipment for measuring the carbon content and dispersion degree of electric wire clothing system and low-temperature test equipment for ensuring quality of products.