RefractoryChina Calcined Alumina CAS No. 1344-28-1 Used in High Temperature Refractories, Castable, Electric Porcelain Device, Automobile Spark Plughigh Alumina Porcelain Parts, Find details about China Alumina High Thermal High Melting Point, Aluminum Oxide Castable from Calcined Alumina CAS No. 1344-28-1 Used in High Temperature Refractories, Castable, Electric Porcelain Device, Automobile Spark Plughigh Alumina Porcelain Parts