Bid CJLLXZH-1 of the post station works of the first phase of the new Capital Airport–Daxing Airport intercity railway project: post station and track works of the new Capital Airport–Daxing Airport intercity railway Beijing New Airport section, mileage DK42+038~DK46+115. The main line has a total length of 4.077 kilometers, including one underground station of Beijing New Airport and two section tunnels at both ends. The construction mileage of the overhead contact system is from DK42+779 to DK44+898, with a total of 8.145 kilometers of overhead contact system.

Bid CJLLXZH-2 of the post station project of the first phase of the new Capital Airport–Daxing Airport intercity railway: the first phase of the new Capital Airport–Daxing Airport intercity railway starts from Langfang East Station to the boundary between Tokyo and Hebei, passes through Guangyang District of Langfang and Daxing District of Beijing, and ends at the boundary between Nanjing and Hebei of the new Beijing Airport. The new main line mileage is DK12+724 ～ DK52+063, and the main line length is 39.339 km. There are four stations in total, namely Langfang East Station, Airport New Area Station Xinhang City Station and XinAirport Station (the post construction of the new airport station is an early construction section and is not within the scope of this project) will have one high-speed train operation station located in Langfang.

As the bridge product supplier of the project, Zhenda Group, since 1999, is a modern enterprise focusing on the design, R&D, production, sales and service of Bus duct, cable bridge, distribution cabinet, seismic support and hanger products. The company's products are widely used in data communication, energy and chemical engineering, research and development and manufacturing, power grid, commercial, residential, cultural and tourism, municipal public construction, warehousing and logistics, education and treatment projects.