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Visually impaired people have many social problems due to their visual defects. They are different from some weak groups, and their needs are often different when emergencies occur. Therefore, in this situation, it is thought that the visually impaired people are When encountering fires, earthquakes, typhoons, and other dangers, how to help yourself and how to effectively escape the danger without anyone accompanying you. In order to help the visually impaired, it can provide effective needs and instructions for the visually impaired at times of danger, ensure the quality and quality of the products.
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