... user habits and the use of different perspectives, adjusting the screen angle of elevation angle for easy viewing, no time and ... good shockproof performance;4. Our regular size is 17", 19", 21", other size can be customized;5. Humanization design, the adjustable ... good shockproof performance;4. Our regular size is 17", 19", 21", other size can be customized;5. Humanization design, the adjustable ...