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 Blackboard Online, Slimline Digital Advertising Displays , Menu Board , Advertising Display Systems ,Outdoor Advertising Digital Display Screens . The continual availability of significant grade merchandise in combination with our excellent pre- and after-sales support ensures strong competitiveness in an increasingly globalized market. The product will supply to all over the world, such as Europe, America, Australia,Brisbane, Argentina,Hongkong, Uruguay.For manufacturers of digital signage, you can rest assured. The digital signage produced by our company adopt international leading production technology and materials to ensure product quality and brand image.Has more than 13 years of factory production experience.Professional technology and strength are well received by customers.This is a very good choice for customers who want to develop their advertising machine business.