大飞机概念强势拉升， 博云新材、国睿科技涨停，通易航天等大涨

Group 1 - The core viewpoint of the news highlights a strong surge in the large aircraft sector, driven by recent joint statements from China with Vietnam and Malaysia regarding the introduction and operation of Chinese commercial aircraft [1] - The C909 aircraft has already been exported to several Southeast Asian countries, and the C919 is accelerating its overseas certification process, indicating a growing potential market for domestic large aircraft in Southeast Asia [1][2] - The current aircraft supply shortage in Asia, exacerbated by delays from Boeing and Airbus, is prompting countries like Vietnam, India, and other ASEAN nations to consider introducing a third aircraft supplier, which could benefit Chinese manufacturers [1] Group 2 - The civil aircraft manufacturing industry holds significant strategic importance for the nation, directly impacting economic growth, job creation, and technological advancement [2] - The industry is characterized by high R&D costs, funding barriers, and global competition, leading to a duopoly dominated by Boeing and Airbus, making entry for new companies extremely challenging [2] - The development level of the large aircraft industry is a key indicator of a country's technological and industrial strength, as well as its international competitiveness [2] Group 3 - The large aircraft industry chain encompasses multiple critical segments from raw materials to complete aircraft, with airframe manufacturing representing one-third of the industry's value, primarily led by domestic aerospace companies [3] - The C919 aircraft utilizes the LEAP-1C engine, and while currently relying on foreign components, the development of the domestic engine Changjiang 1000A indicates a trend towards greater self-sufficiency [3] - Domestic companies contribute significantly to the supply chain in areas such as castings, standard parts, and electronic components, with key material suppliers like China Aluminum and Baosteel providing essential materials for aircraft production [3]