This allows the phone case to adapt perfectly to different situations, just like a good employee Three heights can be selected, the combination of use more colorful, adapt to more scenes. Built-in anti-tipping device, only one drawer can be opened each time, safer to use. Thickened 1.2mm cold-rolled steel plate, smooth surface, strong load-bearing capacity, not easy to deform. Steel ball guide, smooth pulling, quiet and no noise. Anti-collision rubber mat, protect the cabinet, effectively reduce the sound, reduce the cabinet collision.