Among them are insulating wall component, gate and shuttering board made with light burned magnesia.

Those products, each 45MPa and 18Mpa in compressing and bending strength, are high in water and fire resistance and endurance. Their production does not need much cost and manpower, and it is helpful to protecting the resources and ecological environment.

They are now being used in the construction of the Wonsan Kalma coastal tourist area, Jongbangsan Hotel and dwelling houses.

There are also fly-ash low-heat cement, heat ray reflection stained glass and figured tile.

The fly-ash low-heat cement is much used in the construction of small and medium-sized hydro-electric power stations as it has the properties of dissolving temperature stresses and preventing permeability in concrete.

All the above-said products were highly appreciated at the provincial building material exhibition-2019.