This machine is designed in such a way that it produces a very thin layer of fog which is precipitated by water sandwiched in between air layersâ, when the projector projects that is displayed in the air screen. This is a screen from which you can pass through it you can touch it even when the projection is on the play. This machine is built at our factory in Bhopal (MP) India. This machine is completely customized, just tell us your required screen size and we will manufacture it for you. This machine comes with a manufacturing defect 12 months warranty and can be repaired at the premises where machine is installed. .