... charging by sunlight or lamp light, even UV light source for minutes.Material: Strontium Aluminate based.Appearance: Yellowish crystal powder. ... be used in variety of organic mediums including plastic, rubber, paint, fiber, glass, resin, wax, ink, etc. to make the ... , red, orange, etc.)2. Glow in the dark plastic products: printing photo paper, film, sheet, plate, pebble / stone, garden lights, ...