Opening and closing method: electric or manual opening and closing Opening method: telescopic to both sides or unilateral in the middle Panel material: insulating glass, laminated glass Frame color: beige, white, silver gray and other colors to choose from Specifications: The span can be up to 12 meters, and the length is unlimited Safety and stability: safety protection device, double main beam, high-strength alloy device, new material Aesthetics: Hidden motor Mobile conductivity: built-in smart lighting system Audio-visual system: surround audio-visual system Shading system: glass built-in hollow shutters