New Technology of Purifying Sewage Developed

Submitted by KCNA on

Pyongyang, February 28 (KCNA) -- The Mirae Industrial Technology Institute under Kim Chaek University of Technology in the DPRK recently developed a new sewage-purification technology of great econ

New Technology of Purifying Sewage Developed

Submitted by KCNA on

Pyongyang, February 28 (KCNA) -- The Mirae Industrial Technology Institute under Kim Chaek University of Technology in the DPRK recently developed a new sewage-purification technology of great econ

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