A smart nano-blackboard is also called a nano-blackboard all-in-one machine. It is generally divided into 65 inches, 75 inches, 85 inches, 86 inches, 98 inches, 100 inches, and 110 inches. Ordinary blackboards have a lot of dust, causing air pollution and endangering the health of teachers and students. \\\”Floor Standing Lcd Advertising Player, Android Touch Screen Kiosk , Menu Signage , Advertising Signage ,Counter Menu Board . We guaranteed high quality, if clients were not satisfied with the products' quality, you can return inside 7days with their original states. The product will supply to all over the world, such as Europe, America, Australia,Pakistan, Georgia,Macedonia, Singapore.2. The floor digital signage is designed with the latest technology to make its appearance smoother and slimmer. It is made of beautiful anodized lightweight and durable aluminum, which makes the whole advertising frame weigh less than 35kg, making it more portable and easy to install.