The project is a projector fusion of 12 sets SML-SF400 laser ultra-short throw projector , display screen reach to 22x1.5m for the ecological corridor exhibition. Less than 0.25: 1 lens achieve 120-inch screen with the projection distance of 50CM. In a limited space project a large picture, high color expression more increase the ecological color for the exhibition. Use equipment: SML-PF450   Quantity:12 sets