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The power outages affected areas, the thick smoke of the fire scene, how to allow people to find the right position?
We have a finger in the shape of the plastic film installed LED lights，Whether by day or night, whether or travel the road can be instructed to use their
As signs, if it is used to get lost on the members of the instructions can be written
Information on the ranks of the message, and, as a general symbol fingers forms easier to understand