·Advantages: Modular design, can be applied to any railing with small and lightweight volume, and can be replaced at any time, making it convenient for passengers to read

·The plug-in outer frame is designed with rounded corners, and the metal plate thickness is 2mm. The entire card frame is welded and cannot be disassembled. The surface is matte black with electrostatic spray molding

·The plug-in base has a spherical design with a sleeve head, which is integrated and stamped into shape. The sleeve head matches the size of the on-site railing, and can be inserted into the expansion device of the 63mm diameter railing column, which is beautiful, smooth, and free of burrs.

·Insert a U-shaped transparent PETG sheet (inner glass) into the card insertion frame, with a 2mm thick bend (two layer composite) and rounded corners around it.