photoluminescent fire safety signs

Why use glow in dark fire safetysigns? Background 1 : 9/11: Planes hit the World Trade Centers twin towers. In less than 2 hours several thousand people escape. Whether in light or darkness, many survivors credit their lives with the buildings photoluminescent egress path markings, which had been installed for safety following the 1993 bombing. Background 2 : 2/18/2003 Taegu Meeetro, Korea Conflagration Incident, more than 200 persons died.Taegu Metro only used traditional electrical fire escaping direction system. Sunfor Designed and applied its photoluminescent material to the City Metro Direction System. How good of Metro Direction System? 1. Self luminous in darkness 2. Directional Function from all ways 3. Energy saving, no need of any electrical power 4. Free maintenances 5. Simple installation 6. Continuous escaping direction and continual paving 7. Beautiful appearance Where to install on Metro of the Direction System? 1. On the Floor 2. On the Foot Wall 3. On the Step 4. In the Tunnel or Tube 5. On the Pole 6. On the Obstacles 7. Anywhere as you wish