Presented to the exhibition were more than 66600 exhibits made by at least 830 producers in all provinces.

The exhibition will give appraisal of producers according to the state of building the factories of producing locally available building materials in provinces, the kinds and quality of the products and their utilization by conducting field survey, judgment by experts and appreciation by people and synthesizing the results.

Exchange of technology and products and sci-tech learning will also take place during the exhibition.

The opening ceremony was attended by Vice-Premier Tong Jong Ho, Ri Chung Gil, chairman of the State Commission of Science and Technology, officials concerned and officials, technicians, skilled and other workers of the participating producers.

The exhibition will last until Dec. 13.