... 1,Casing: fireproof material2,Player media: CF card,USB2.0 connection3,Display size: 52 inch TFT-LCD4,Using flash ... users for displaying their products. 6,All digitized player function with built-in video and speaker systems. ... 10,Locking system for anti-theft, preventing the player and storage devices from stealing.11,Super-thin, ... of the quotation: within 30 days. 55-inch multimedia advertising machines