南风股份：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

Core Viewpoint - The company Nanfeng Co., Ltd. (300004) primarily applies its ventilation products in underground construction and engineering scenarios such as subways, tunnels, and underground parking lots [1] Company Summary - Nanfeng Co., Ltd. focuses on ventilation products [1] - The company's products are utilized in specific infrastructure projects, indicating a niche market presence [1] Industry Summary - The ventilation product market is relevant to underground construction, which includes subways, tunnels, and parking facilities [1] - The application of these products highlights the importance of ventilation solutions in enhancing safety and air quality in confined spaces [1]