Main uses: production of ordinary magnesia bricks, magnesia alumina bricks, magnesia chrome bricks, gunning materials and hot repair materials for converters and electric furnaces, etc. (Production of mid-range magnesia, magnesia-aluminum spinel bricks, bid-winning magnesia-chrome bricks, converter and electric furnace gunning materials, converter large-surface repair materials, tundish gunning materials, tundish dry materials, etc.)