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. Multitouch Drafting Table, Television Menu Boards , Menu Board Systems , Digital Drive Thru Menu ,Digital Menu Board Media Player . We are one of the largest 100% manufacturers in China. Many large trading companies import products from us, so we can give you the best price with the same quality if you are interested in us. The product will supply to all over the world, such as Europe, America, Australia,French, Argentina,San Diego, Morocco.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;