... SGS report WGS international standard certification: ISO9001:2000 properties of photoluminescent pigment:a. short excitation time; long afterglow time; ... radioactivity, no burning, no explosion, no heavy metalsusages of photoluminescent pigment:suitable for various transparent and semitransparent medium, such as ... , pictures, stones, toys, clothes, shoes, working uniform, etc. photoluminescent pigment