On the basis of actual application areas and conditions, using high-purity, high-density, large-crystal magnesite and high-purity graphite as raw materials, using high-pressure shaping technique, PRCO developed and manufactured PN series of magnesia-carbon bricks, which show the features of high strength, excellent resistance against slag, etc. The products can be widely used for lining of furnaces and ladles, especially for slag line, hot spot, trunnion, tapping hole, pocket ladle bottom seating block, etc. According to the actual smelting condition, magnesia-carbon bricks with different brands are used for different areas in EAF.