On June 18th, GeLongHui reported that ZhongJi RenJian (301508.SZ) stated on an investor interaction platform that it had been a designated inspection and testing institution for aviation ground service equipment by the Civil Aviation Administration of China for more than 30 years in the field of ground equipment testing, with outstanding detection technology capabilities and the ability to provide standard research and testing services for various types of aviation ground service equipment products, such as large passenger boarding bridges, aircraft tow tractors, berthing systems, aircraft de-icing vehicles, airport passenger shuttle buses, and so on. At the same time, the company has obtained drone testing qualifications, and can provide drone environmental testing, electrical characteristics, software evaluation and other services, and has already realized revenue. The company will soon invest in the Intelligent Emergency Equipment Testing Industrial Park project in Yanqing District, Beijing, which will further enhance the company's testing capabilities for intelligent unmanned equipment including drones, and help the company serve the development of low-altitude economy, providing solid technical support and quality assurance for the development of China's strategic emerging industries and future industries.