... of toxic, radiation, harmful material Widely using Luminous signs , glow in the dark place after being ... by light, the wisest choice for safety signs application.1. Easy to useSelf adhesive, ... charge it to give luminous.-20~120oC, 0~100% humidity, the signs remain the same character ... .7. Wide applied fieldsEscape directions, exit signs, stairs mark, barriers outlines,firefighting extinguisher, ...