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. Smart Board Extended Display, Static Menu Board , Digital Food Menu Boards , Retail Menu Boards ,Electronic Menu Display . Hope we can create a more glorious future with you through our efforts in the future. The product will supply to all over the world, such as Europe, America, Australia,Rwanda, UAE,UAE, Guyana.People from a province. The function of a self-service ordering machine not only realizes self-service ordering, but also self-payment, which can replace the original work of one or even several staff members, and can save a lot of manpower;