... light(sunlight) or lamplight for 10 minutes, then continuously glow in the dark more than 12 hours.b. stable physical and ... fire alarm, selfsaving tools, etc.b. safety fieldshow safety indication in the dark, such as signs, warming item, emergency passage way ... , clothes, shoes, working uniform, etc. superlong afterglow luminous pigment/photoluminescent water base powder/glow in dark water base powder