Gelonghui, April 2 | Hongdu Airlines (600316.SH) said on an interactive platform that the company's main business is the development and manufacture of trainers and defense products. Among them, the Chujiao 6 aircraft produced by the company is a low-altitude fixed-wing aircraft. As a mature model that has nurtured several generations of air force pilots and has excellent stability and safety performance, it has obtained the (civil aircraft) model certification, production license, and standard airworthiness certificate issued by the Civil Aviation Administration of China, marking that the Chujiao 6 aircraft has officially entered the domestic civil low-altitude flight field.