Pyongyang, April 21 (KCNA) -- Doctor Jong Ryong Su, manager of the Pyongyang Jonghyang Building Materials Factory, was registered as one of the DPRK's best inventors for 2025.

He developed more than 30 kinds of quality paints, waterproofs and concrete additives, thus contributing to diversifying building materials and implementing the construction policy of the Workers' Party of Korea.

Lots of building materials including functional paint were awarded the December 15 Quality Medal and certificate and registered as February 2 goods as their technical specifications conform to or surpass the international standards, and the factory was granted patents on over 10 kinds of building materials.

Modern testing and measuring instruments, production equipment and scientific quality inspection system scientifically ensuring the quality indexes of building materials are associated with the thought, research and devotion of Jong Ryong Su. -0-