Sosu nano smart blackboard 4K high-definition display, A+ LCD panel with brilliant colors, high-contrast high-brightness display resolution that can support up to 4KUHD, high-light filtering technology, filters out 85% of the light source that is harmful to the eyes, making the picture softer. An Interactive Whiteboard Is An, Commercial Display , Digital Menu Board Hardware , Shop Window ,Counter Menu Board . Our service concept is honesty, aggressive, realistic and innovation. With your support, we will grow much better. The product will supply to all over the world, such as Europe, America, Australia,Australia, Estonia,Greece, Bangalore.Using the kiosk ordering system, you can have the "four provinces" function