... by sunlight, lamp light, UV light for a few minutes.Material: Strontium Aluminate based. Appearance: Yellowish crystal powder.Dangerous: No.Toxic ... them.ZhongbangChem's products range: photoluminescent pigment (yellow-green,blue-green, blue, purple), photoluminescent printing paper/ photopaper, photoluminescent film, photoluminescent shoelace / string, etc.For ...