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. Subway Self Order Kiosk, Displays Commercial , 43 Inch Commercial Display , Vertical Digital Menu Board ,Digital Advertising Display Screens . Thanks for taking your worthwhile time to go to us and stay up for have a nice cooperation along with you. The product will supply to all over the world, such as Europe, America, Australia,Karachi, French,Moldova, Russia.1. The advertising digital signage is part of our LCD retail series, a digital advertising stand that enables owners of retail businesses, restaurants, clubs, exhibitors, and event organizers to upload any video and digital stills in the most straightforward way content to showcase its core offerings. It's intelligent, stylish, and simple. It offers high resolution with a pixel pitch of 2.5mm. Users can place it anywhere, and it is portable and easy to maintain.