The domestic system is estimated at the Pyongyang Catfish Farm, the Samchon Catfish Farm and other fish farms throughout the country as it is incomparably superior to the previous ones in efficiency, reliability, serviceable life, cost and all other aspects.

It is helpful to putting fish farming on an intensive basis.

Ryo Hyo Jong, director of the institute, told KCNA that the stability and effectiveness of the system have been fully proven in on-spot tests.