Running with white characters on a green background is an exit sign, and the exit sign is a green villain. China's natio
Running with white characters on a green background is an exit sign, and the exit sign is a green villain. China's national standard is green, which is based on the fact that the flame color is red, and red and green are complementary colors. The contrast is strong, and the identification performance is good, which is conducive to clarifying the escape instructions, so green is the correct choice for the safety exit. Safety exit stairwells and outdoor stairs are entrances and exits for people to evacuate safely, or exits leading to indoor and outdoor safety areas, mainly for an independent fire zone or floor. Evacuation exits are not necessarily safety exits, including safety exits and room evacuation doors, so safety exits are safer evacuation exits.