Those of the Hamhung Branch of the State Academy of Sciences have developed over 30 valuable technical innovations and inventions including railway fixtures for improving the safety of railways while saving crude rubber.

Young people of the February 8 Vinalon Complex, the Hungnam Fertilizer Complex and the Ryongsong Machine Complex established material- and labor-saving production processes and invented and introduced innovative proposals for putting production on a normal footing.

Youths of the Pujongang Power Station are playing a big role in putting production on a normal basis.

Young people at the Kowon Coal Mine contributed to increasing the coal carrying capacity by introducing inventions for raising the actual running rate of winch.