Fused Magnesia is produced in electric arc furnaces by fusing super grade-A raw Magnesia ores or high-purity caustic calcined Magnesia particles. Featured with high purity, big crystalline particles, dense structure, strong slag resistance and good stability against thermal shock, It is an excellent high-temperature electrical insulating material and also important raw material for making high-grade Magnesia bricks, Magnesia carbon bricks and unshaped refractory materials.