... crystal powder.Average particle size range: 20~25um.Luminous color: Red.Free of dangerous, toxic, heavy metals, radiation. Friendly to ... dyes, thermoplastic, arts, toys, etc. The pigment is wide applied item for its content. Fast charging, excellent associativity.Dosage range: 5~50 ... in yellow-green, blue-green, sky-blue, blue-purple, red, orange, etc.)2. Glow in the dark plastic products: printing ...