Shade: Louvre blade apt closely, sunlight cannot penetrate. Lighting: adjust the height and the Angle between the shutter shutter the space above, select the right light. Safety: below the safety voltage 24 v. Privacy: rising type shutter change traditional hole to hole, the promotion from down to up, completely cover, at the bottom of the traditional land must all transferred to shelter under. Frost prevention: double hollow glass completely insulated from external frost. Environmental protection and energy saving, environmental protection, Venetian blinds low-power motor, low noise. Noise insulation: double hollow glass completely isolated from the outside world of noise and heat transfer.