Zhejiang Langdi Group (603726.SH) stated on the investor interaction platform on September 4th that the company's fan blades are mainly used in household air conditioners, central air conditioners, subway and tunnel ventilation, residential and public building ventilation, communication cabinets, air purification and fresh air systems, etc. Currently, the company does not have any products applied to the drone and flying car fields. The company will actively pay attention to industry development trends and market customer needs.