In the past， Magnesia-Alumina-Spinel bricks were considered as state of the art for chrome-free kiln linings in the cement industry.
In the past， Magnesia-Alumina-Spinel bricks were considered as state of the art for chrome-free kiln linings in the cement industry.
过去，在水泥行业中，镁铝尖晶石砖被认为是最先进的无铬衬砌方案。