This pigment is a new type of long afterglow photoluminescent pigment Free from any radioactive substance and with strong capability of absorbing-storing-emitting light, the pigment can glow in the dark automatically after absorbing varieties of visible lights. Being one kind of additives, it can be added in many clear vehicles, such as coat, paint,ink, plastic, ceramics, glass etc.Those luminous products applied of this pigment show good effectsin lumination,indication,and decoration.