... Long Life ,Image of Light box panel will not be deformed after Long time working Snap Frame : Open and change quick ... .3.The specification of Perfect Led Cryatal Light Box :A.super thin,thin as paper,about 0.3mm ... Letter Walking Light Box , Vertical Light Box , Led Crystal Light box , Hanging Crystallight Box , Led slim Light Box , Magic Mirror Light box , EL Poster , El Dynamic Light box ,El Parameter ...