TANATT® optical storage in the spontaneous fire safety signs are used without power supply, indication information continuously, can be applied to the ground, easy installation and maintenance, luminescence characteristics of safety coefficient of 100%, compared with the traditional electrical safety sign to energy conservation and environmental protection, installation using range is wide, not only is fill expired discontinuity set the gap left by the function, and thus has been launched, immediately became the world on fire control safety fire safety instructions preferred recommended by the department of new product, in fire safety, emergency evacuation, transportation and other fields is widely used.