Geotinde TV on the CRT bulb Preparation and use of saeryum oxide is used as a bleaching and coloring agents in the glass during the glass production, rare earth is mainly obtained in the monazite, bust or site, gen-time and ion absorbing fluorescence, other ores. The rare earth compound of the bulb glass bulb used in bleaching and coloring agents, in the manufacture of glass adding the rare earth compound is calcined oxide Chinese Four Doosan bust or sites that prepared by treating the mineral for hydrochloric acid leaching, water rinsing talcheol, filtered, dried, four minutes to cerium oxide (cerium Concentrate) and its production method, it characterized in that the cerium compound at least CeO ₂ content of 60%.