... ceramic crucible (1) Material: MgO 90;MgO 96;MgO 99 98%, 99%, 99.4%, 99.8(2) Product Description:Caustic calcined ... , magnesium oxide bricks, MgO board, abrasive, fertilizer, water retention material, feed additive, paper making, etc.Specification:Physical & Electrical CharacteristicsUnitMgOContents%95 99.5densityg ...