Realglow photoluminescent pigment material

The glow in the dark gravels/photoluminescent pigment is made from the rare earth elements such as alkaline-earth aluminate or silicate,compounded by high-temperature solid phase reaction,is a kind of novel,long-efficiency and environmentally friendly material invented in recent years,after recharged bysunlight, lamp light, UV light,any kind of visible lights for 10~30 minutes, photoluminescent signs can glow in the dark place for 8-12 hours repeatedly.Short Storing-light time for10-20 min,and long afterglow time can over 10-12 hours with 200-450nm wide excitation wavelength:,e.g. visible light, Lamp light,UV light.