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wang yan, the captain of air china's c919 on its maiden flight, was filled with emotion: "this is a huge mainline passenger aircraft that was completely independently developed by the chinese. every detail represents the highest level of china's aviation industry." this confidence comes from domestic production. the unique path of large aircraft - "chinese design, system integration, global bidding, and gradual improvement of localization."

from raw materials to components, the c919 industry chain has gathered many key domestic and foreign companies. baosteel co., ltd., chalco, nanshan aluminum and other companies serve as raw material suppliers, and china baowu steel group and chinalco are the founding shareholders of comac. enterprises such as avic xac, aerospace huanyu, jianghang equipment and sichuan jiuzhou are involved in the development and production of key links such as airframe structures, composite materials, commercial aviation engines and airborne systems. shanghai lingang new area has brought together many key domestic and foreign enterprises, forming a complete industrial chain system.

although the engine part, which is the most technically difficult and valuable part in aircraft r&d and manufacturing, still relies on foreign suppliers, the cj1000a engine developed by china aviation development corporation has made a major breakthrough and has been loaded into the aviation industry test flight center for transport. a test flight of the modified engine of the -20 transport aircraft was carried out on the general flying platform. in the future, the domestically produced c919 large passenger aircraft will also be equipped with a domestically produced “heart”.

according to calculations by the aviation economics institute of the civil aviation university of china, if the life cycle of a civil aircraft is 10 years, the contribution ratio of large aircraft to china's economic added value is 1:86, and the contribution ratio to employment is 1:9.6. while the current c919 localization rate remains unchanged, domestically produced large aircraft are expected to bring a trillion-yuan market size to industry chain companies. as the localization rate increases, the industrial chain and supply chain will be driven to a new level.

the successful development of this technological innovation not only means the rise of china's aviation industry, but also represents china's global competitiveness in the manufacturing industry.