1.high brightness 2. long afterglow time 3.flexibility, weather resistance 4.easy to be characterized by ... -toxic, non-radioactive, has stable chemical properties, high initial luminance, long duration, good extensibility, can be used in bad weather, good for ... guiding, place name signs, traffic signs, mine, fire fighting3.Feasible operating temperature:18-28°C4.Service Life: Indoor 20 years,outdoor ...