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. Interactive Classroom Whiteboard, Free Android Kiosk , Commercial Screen Display , Outdoor Digital Advertising Display ,Indoor Digital Menu Boards . Our main objectives are to deliver our consumers worldwide with high quality, competitive selling price, satisfied delivery and outstanding providers. The product will supply to all over the world, such as Europe, America, Australia,UK, Hyderabad,Islamabad, Stuttgart.Using the kiosk ordering system, you can have the "four provinces" function