This is a CAD drawing for the plane design of a three storey commercial office building, which includes: the plan of the third floor mezzanine B of the exhibition building, the plan of the top of the exhibition building, the plan of the third floor mezzanine A of the exhibition building, the plan of the first floor of the exhibition building, the plan of the second floor of the exhibition building, etc. The contents of the drawing are detailed and can be downloaded for reference.