2015 Taobao dual-screen display class sales champion This dual-screen display can be rotated 180 degrees, and its design focuses on the rotating shaft in the middle, because the look and feel of this shaft determines the quality of the product. The designer and the structural engineer communicate closely to determine the size and rotation of the shaft. The combination of simple and tough details reflects the solid and reliable shaft, and even adjusts the matching details of some parts to ensure smooth and no-noise rotation. Good use experience.