hi every one, ZIOT, is an innovative electronic technology research and development enterprise integrating design, research and development, production, sales and after-sales. The company has professional R & D technical personnel, sosticated production equipment, strict quality control, people-oriented design loso, innovative innovation spirit, designed to provide quality products and services. now ZIoT has 42cm, 56cm,65cm 3d hologram advertising device ,and new size High-quality 68cm is coming soon. You just me, a real manufacturer, you will get the best price.