... certification: ISO9001:2000 properties of superlong afterglow luminescent pigment:a. short excitation time; long afterglow ... explosion, no heavy metalsusages of superlong afterglow luminescent pigment:suitable for various transparent and semitransparent medium ... helmet, bicycle etc.c.others:crafts, pictures, stones, toys, clothes, shoes, working uniform, etc. superlong afterglow luminescent pigment ...