Advanced self-locking system device, can be locked at any position, want, try for the control of free, a gorgeous fashion style.
Optional curtain material: white plastic ( capable of cleaning the screen surface, fire prevention, anti-virus, display visual angle 50; photometric transfer 1.5)
 Pearl White ( can clean the screen surface, fire prevention, anti-virus, display visual angle 35 photometric transfer 2.5)
 Glass beads ( fire, gas, display visual angle 30 photometric transfer 2.5)

Screen specification 4 : 3 standard video mode
Diagonal ( inch )  84"          100"        120"        150"  
The screen size ( CM ) 128*171     152*203     183*244      229*305 

Build screen specifications 1 ：1  Film projector special
Diagonal ( inch )   60"          70"         84"         
The screen size ( CM ) 150*150      180*180     213*213