The rare earth_activated alkali earth aluminate-silicate photoluminescent pigment£¬ with the chemical formula of MO¡ª AL2O3¡ªbSiO2¡ªCl£ºFx, compounded by high-temperature solid phase reaction£¬is a novel£¬long-efficiency and environ mentally friendly material¡£ Product characteristics: 1.A slight chartrease powder , turns to green color after being excited by light¡£ 2.High initial luminance,long after glow time¡£ 3. Its light-resistance,aging-resistance and chemical stability are all good (more then 10 years of life span)¡£ 4. Non- toxicity,non-radioactivity,non-flammability and non-explosibility¡£