Zibo HITECH Material Co., Ltd is specialized manufacturer and supplier of refractory. We have exported to many famous companies, and they are satisfied with our products. For the magnesia brick: MGO: 87%, 89%, 91%, 93%, 95% CaO<2.0% Refractoriness under load: >1620 Apparent porosity<20% Cold crushing strength>50Mpa Linear change after reheating(1650× 2h): 0-0.5% Magnesia bricks and magnesite-zircon brick etc are the main products of basic refractories. The products have the properties of bearing high temperature, high refractoriness under load and good resistance to alkali. They are widely used in the basic zone of metallurgical furnaces, nonferrous furnaces and regenerator of glass furnaces.