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In China , one serious problem is that most of the old communities dont have light in storied buildings , thus bring a big inconvience for people to go up/down stairs at night .When in dark ,the most difficult thing to clime stairs is that people usually dont know when to set off the first step .After the first step is setted off ,they can move smoothily due to their usual experience .So we designed a light especially for such circumstances.
Lijingwen Lilinfang Kanglin Liangruisi