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The curtain wall is the outer wall of the building. It is not load-bearing and hangs like a curtain, so it is also called "curtain wall". It is a lightweight wall with decorative effects commonly used in modern large and high-rise buildings. It is composed of panels and supporting structure systems, which can have a certain displacement ability relative to the main structure or have a certain deformation ability, and do not assume the role of the main structure. a kind).