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At night,the light is too dim.Sometime you may find you need the items,such as glasses ,flashlight,key.in the night it will emit faint light,so that you can be in the case of power failure or turn on the lights will disturb others ,helping you find what you need things .
ZhengzhouUniversityOfLightIndustry
zhengzhou, China
ZhengzhouUniversityOfLightIndustry
zhengzhou, China