Pyongyang Kim Jong Suk Silk Mill has established the production process of silk protein from waste water with its own effort.

The South Hwanghae Provincial Commission of Science and Technology has achieved successes in preserving ecological environment and solving fuel issue by introducing the technology of producing charcoal with biomass waste.

Jagang Province and other regions have made contribution to the improvement of the standard of people's living and the prevention of environmental pollution by producing various kinds of consumer goods from waste plastic and vinyl.

The Heat Engineering Institute of the State Academy of Sciences has newly established the process of purifying waste water by using poly iron sulfate and pushed forward the work for introducing it to industrial establishments in Pyongyang City, Kangwon Province and Rason City.