Recently, the museum has upgraded the multimedia cinema. The upgraded multimedia cinema can realize the lossless projection of 4K resolution films. The perfect upgrade of the multimedia theater radiates new vitality and brings visitors an immersive experience integrating visual and auditory senses. After strict review and selection by the museum, Beijing Wincomn technology was selected by virtue of its excellent strength to undertake the upgrading and transformation of the audio and video system of the multimedia theater, and carried out all the work of the video and audio system scheme design, equipment procurement, construction and installation, commissioning and maintenance for the theater, helping the theater to complete the system upgrading.