This powder is a new type of long after-glow luminescent material. Free from any radioactive substance, it can glow in the dark automatically after absorbing varieties of visible light. The process of absorbing-emitting can be repeated forever. Being one kind of additives, it can be added in many media, such as coat, paint, ink, plastic, printing paste, ceramic, glass etc. Those luminous products applied in the powder show good effect in emergency illumination, indication and decoration.  The finished articles made of our powder can be widely applied not only in personal consumption, such as switch, arts, garment, shoe and cap, stationeries, clock, fishing gear, crafts, gym articles and so on, but also in architecture, decoration, conveyor carrier, military equipment, fire fighting emergency system (entrance and exit sign, indicating system of fleeing and life-saving) etc.