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Signal Research Success AchievedScientists of the Chemical Material Institute under Hamhung Branch of State Academy of Sciences have developed a new technology for non-excavation pipeline restoration, which is of great economic value.They discovered the composition of pipeline materials and established the rational production process and restoration method of the pipes, thus making it possible to restore the original efficiency of the pipelines buried under the ground with less effort.The technology is of great economic benefits as it has less influence on the environment, underground facilities and city traffic and is helpful in saving manpower.The scientists have introduced the production process of various sizes to several units, proving the scientific accuracy and effectiveness.Rodong Sinmun Signal Research Success Achieved Scientists of the Chemical Material Institute under Hamhung Branch of State Academy of Sciences have developed a new technology for non-excavation pipeline restoration, which is of great economic value. They discovered the composition of pipeline materials and established the rational production process and restoration method of the pipes, thus making it possible to restore the original efficiency of the pipelines buried under the ground with less effort. The technology is of great economic benefits as it has less influence on the environment, underground facilities and city traffic and is helpful in saving manpower. The scientists have introduced the production process of various sizes to several units, proving the scientific accuracy and effectiveness.