Photoluminescent Pigment Classification: At present, there are six categories of Photoluminescent pigments: MH series, MH-W series, MH-Y series, MC series, MS series, and MT series 1MH series photoluminescent powders are alkaline earth aluminate phosphor-based luminescent materials, which are available mainly in light yellow, grayish white, and light grey. Their luminescent colors mainly include yellow-green, blue-green, blue and purple. 2MH-W photoluminescent pigments are manufactured with MH pigments through encapsulated process, which can be directly used for water-based paint or ink. 3MT photoluminescent pigment has to be specially processed. They have bright appearance, usually in red, yellow, green, blue, and so on. Surely, the appearance and luminescent colors can be particularly prepared to meet with customers specific requirements. 4 MS series are sulfide-based photoluminescent materials, which usually is present in red or white and the luminescent colors include red, etc.