广联航空(300900.SZ)：是C919飞机的工装供应商和零件供应商

Group 1 - The company, Guanglian Aviation, is a supplier of tooling and parts for the C919 aircraft, providing various composite material forming tools and some metal structural components such as long beams, frame sections, crossbeams, and reinforcements [1] - The stock price of the company is influenced by a combination of factors including the capital market environment and market sentiment [1]