According to data available, they invented and introduced more than 10,000 technical innovations until mid-December to contribute to the activation of production.

The April 15 Technical Innovation Shock Brigade active in the Chollima Steel Complex helped reduce the steelmaking time considerably lower than before and lessen the electricity consumption per one-ton steel production by 50 kWh and opened a prospect for boosting the production by installing a gas producer at a heating furnace for 6,000-ton press.

The April 15 Technical Innovation Shock Brigade in the Hungnam Fertilizer Complex expanded the production capacity of nitrogen fertilizer and realized the home-production of catalyst to contribute to strengthening the foundations for the independent chemical industry.

Members of the April 15 technical innovation shock brigades active in the field of electric power industry achieved sci-tech successes of great significance in repairing and reinforcing the generating equipment. In particular, those active at the Hoeryong City Power Distribution Station developed a power management system helpful to grasping and controlling the consumption of instantaneous power in the city and completed a digital systematic protection device.

Those in the field of coal industry improved the working conditions by introducing new technologies. They raised the blasting efficiency more than 95 percent and doubled the serviceable life of bearings for coal wagons.

The April 15 technical innovation shock brigades in the fields of light industry, fishing industry, etc., too, invented and introduced new technologies conducive to promoting the production.