Glow in the dark stone

Everyglow™ Glow in the dark stones are made from virgin PS,PC resin,silicates material and Everyglow luminescent pigment. it comes in difference shape and size.Which Glow in the dark more than 12hours when aborb light source for 5-30mins. this glow and aborb light process is reaptedly. non power and Battery request.Widely use for landscape,plant pots,terrazzo, pavement, and cement floors project.