... sample preparation, etc. Magnesium oxide ceramic crucible (1) Material: MgO 90;MgO 96;MgO 99 98%, 99%, ... production of pharmaceuticals, rubber making, and building material industry etc.(3) Application:Fireproof material, refractory, magnesium oxide bricks, MgO board ... , abrasive, fertilizer, water retention material, feed additive, paper making, etc.Specification:Physical & ...