南风股份(300004.SZ)：通风产品目前主要应用于地铁、隧道、地下停车场等地下建设及工程场景

Group 1 - The core viewpoint of the article is that Nanfeng Co., Ltd. (300004.SZ) primarily applies its ventilation products in underground construction and engineering scenarios such as subways, tunnels, and underground parking lots [1]