... high-definition digital digital signage can be customized 19-inch, 20 inch, 22 inch, 26 inch, 32 inch, 37 inch, 42 inch, 46 inch, 52 inch, 55 inch size, sample ... airports and other advertising and information dissemination market has broad prospects.Second, vertical screen digital signage display styleVariety of display ... hospitals, schools, telecommunications, post office, etc. lcd advertising player