An efficient pressure-style water filter, made by the Paektusan Institute of Architecture, helps improve the quality of water by removing germs and suspended matter.

A vegetable insecticide, developed by Haeju Kim Jong Thae University of Education, is effective for removing harmful insects from the surface of leaves, stems and fruits and for removing caterpillar, beetle and cabbageworm.

"Tanbaekcho-3", newly bred by Hamhung University of Agriculture, can turn out 50-100 tons in per hectare and 150 tons in the maximum, making it possible to raise the production of protein feed three-four times and five times to the maximum.