Pyongyang, August 7 (KCNA) -- A national sci-tech presentation of finishing building materials took place at the Pyongyang Jonghyang Building Materials Factory on August 5 and 6, under the sponsorship of the Korean Building Materials Association of the C.C., General Federation of Science and Technology of Korea.

The presentation, held under the theme of "Home Production and Quality Improvement of Finishing Building Materials", brought together officials, scientists, technicians, teachers and graduate students of more than 30 units.

Presented there were over 70 proposals.

Certificates were awarded to the participants who were highly appreciated.

During the presentation, there was a technical lecture on the sci-tech problems arising in producing fixture board with by-product from lignum. -0-