Be sure to remove the insulating film inside for the first use, otherwise it will not be bright, and if you find that it is not bright after receiving the goods, take pictures to the customer service. It is also one in a thousand chances that it will not be bright. We will reissue it for free.![](http://img.alicdn.com/imgextra/i3/2565659400/TB2X58hdpXXXXbYXXXXXXXXXXXX-2565659400.jpg)
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