The main curtain of the stage; it is used mainly for the opening and closing of the beginning and end of the performance, and sometimes as a curtain. Types are split, lift, series curtain, uniform and so on. Eaves curtain: the horizontal curtain at the entrance to the stage in front of the curtain. It is used as the false entrance of the eaves on the stage to block the audience's view over the stage. It is matched with the curtain, thus setting off the beauty of the curtain. Types are lifting, fixed and so on. 2. three scenes: used for singing, singing, playing, etc. in various forms of performance, in a variety of drama, opera fragments, the use of the opening and closing of the 2. three scenes to change the scene and props. Types are open and close, lift, series curtain, uniform and so on. Electric opening and closing stage screen product features: 1. The electric opening and closing stage curtain adopts synchronous motor. The motor is small in size and has a large pulling force, which can pull a large curtain of 90kg. 2. The electric flat opening has been adopted by most stages, and its motor needs to run fast and have strong load capacity. Lingshuo electric stage flat opening system adopts domestic or imported motors, which are divided into two types: ordinary curtain and speed regulating curtain. 3. The stage aluminum alloy track is adopted, and the pulley adopts imported bearings. The track runs smoothly, the noise is small, and it can be connected. 4, can be used mechanical button type, infrared or radio type, can also be connected with multimedia * control system, can realize the program control or remote control, can also use timing, light control