... crystal powder.Average particle size range: 20~25um.Luminous color: Red.Free of dangerous, toxic, heavy metals, radiation. Friendly to human and ... , luminated powder, etc.Glow pigment can be used in variety of organic mediums including plastic, rubber, paint, fiber, glass, resin, ... (glow in yellow-green, blue-green, sky-blue, blue-purple, red, orange, etc.)2. Glow in the dark plastic products: printing ...