1. Kim Chaek University of Technology Department of Applied Chemical 950003 Pyongyang Democratic People's Republic of Korea
2. Kim Chaek University of Technology Institute of Nano-Physical Engineering 950003 Pyongyang Democratic People's Republic of Korea
3. Pyongyang University of Mechanical Engineering Department of Resource Development Machinery 950003 Pyongyang Democratic People's Republic of Korea
4. Kim Il Sung University Department of Energy Science 999093 Pyongyang Democratic People's Republic of Korea