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Glow marbles&slates are made from photoluminescent pigment, plastic resin, addititives, etc. They are available in vourious color and shape. The max. size can be 60mm*400mm*400mm.
Comprising the latest in photoluminescent pigmenting technology, they are easily charged up in several minutes by natural or artificial light sources and glow for hours at a time, with an expected lifespan of twenty years.
More info feel free to contact Lightleader.