... quality, low price properties of luminous sign:a. short light storage time, long lasting luminous time, high brightnessabsorb any ... toxic, no harm, no radioactivity, no heavy metalsseries luminous signs:road instruction signs, road safety signs, ship safety ... caution signs.materials of luminous signs:PVC, acrylic, aluminum alloy, stainless steel, ABS plasticsizes of luminous signs:120mm*340mm, 150mm ...