Group 1 - The successful completion of flight calibration for the air traffic control equipment at Guangzhou Baiyun Airport marks the readiness of key communication, navigation, and surveillance devices necessary for the operation of the fifth runway and new control tower [1][2] - The flight calibration involved critical inspections of multiple systems, including the automated control system for the second control tower, VHF communication for the fifth runway, surface monitoring radar, and multi-point positioning systems [1] - The Central South Air Traffic Management Bureau implemented a dual-direction flight route design to mitigate the impact of complex weather conditions, ensuring the efficient completion of over 20 inspection tasks within a limited timeframe [1] Group 2 - The third phase expansion of air traffic control engineering at Guangzhou Baiyun Airport is progressing steadily, with a focus on meeting long-term safety operation needs while enhancing air traffic control safety levels and support capabilities [2]

Group 1 - Suzhou Planning intends to acquire a controlling stake in Beijing Dongjin Aviation Technology Co., Ltd. through a combination of share issuance and cash payment, with the specific transaction price and acquisition plan yet to be determined [2][4] - Dongjin Aviation Technology specializes in the research, production, and sales of air traffic management electronic equipment, low-altitude flight service guarantee system construction and operation, and drone comprehensive supervision service platform construction and operation [2][4] - Dongjin Aviation Technology was previously listed on the New Third Board but voluntarily delisted in August 2024 after six consecutive years of net losses [2][5] Group 2 - Suzhou Planning, listed in 2023, primarily engages in planning and engineering design services, categorized as an "intellectual service industry" [4] - The transaction is currently in the planning stage, with significant uncertainties regarding the specific transaction scheme [5] - The final transaction price for Dongjin Aviation Technology's equity will be determined based on an assessment report and negotiated among the parties involved [4][5] Group 3 - Dongjin Aviation Technology's last financial report indicated a continuous decline in performance, with a net profit attributable to shareholders of -7.43 million yuan in 2023, representing a 214.20% increase in losses compared to the previous year [6] - The company's main clients include major airports, civil aviation authorities, airlines, military, and large enterprises related to the aviation industry [8] - The decline in operating profit for 2023 was attributed to increased research and development expenses related to general aviation and drone management systems [8]