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              Alumina Hollow Bulb Brick / Alumina Bubble BrickAlumina hollow bulb brick/ Alumina bubble brick is a light alumina product made of industrial alumina by melt-blown method. The lightweight refractory insulation bricks made from the hollow bulb can be used as linings in high temperature furnaces in direct contact with flames. 
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              Sintering FixtureOur push plates and crucibles have the advantages of high alumina content, low impurity content, high temperature resistance, good thermal shock stability and low expansion coefficient. 

