The steel roof of the exhibition hall adopts a new type of space structure-the prestressed spatial truss string structure with a span of 126.6m, which is the longest span in China.

• 展览大厅钢屋盖采用跨度 12 6 .；6米的预应力张弦立体桁架结构；是该类结构在国内最新应用的、也是跨度最大的工程。