The Ministry of Public Security Shock Brigade has developed and introduced a welding rod with great efficiency and low production cost.

It has also solved the technical problems arising in the operation of auto-sand sieve and thus ensured the speed and quality of sand sort and saved the manpower and working time.

The High-Speed Youth Shock Brigade has raised the speed of assembly by 180 percent by developing and introducing a new form assembly method.

The Pyongyang Construction Commission Shock Brigade has increased the speed and quality of the project while saving more iron bar and wood than the past through the development and introduction of a fresh construction method.

A lot of units have also contributed to erecting an ideal street while making valuable technological innovations.