Recently, the Techo International Airport in Cambodia commenced official operations.

The CSCEC-constructed airport is the largest steel-structure project ever built in Cambodia and the country's first 4F-level international airport, the highest grade in the global civil aviation system.

Located in Kandal Province, about 19 kilometers from downtown Phnom Penh, the airport covers 2,600 hectares and spans both Kandal and Takeo provinces. Its terminal building consists of a central hall flanked by two wing-shaped structures, inspired by Cambodia's ancient civilization and local architectural forms. Once operational, the airport will be able to handle up to 50 million passengers annually.

As the largest steel-structure project in Southeast Asia by volume and area, the terminal roof spans 216 meters in width and 360 meters in length. It is formed by 45 dome units with a 36-meter span each, using over 11,000 tons of dome components.

The project team pioneered the use of key technologies for constructing super-large “sugar palm-shaped” space trusses, overcoming technical bottlenecks such as deformation control, high-altitude anti-moisture welding, and real-time monitoring, achieving millimeter-level precision control (actual accuracy reached ±3mm).

The project marked Cambodia's first use of fair-faced concrete for bridge piers, meeting the CSC4 standard for concrete finish quality. With high safety and quality standards, it won an International Safety Award in 2022.

The airport houses Cambodia's largest energy center, featuring six chillers with a 7,800 kW cooling capacity each. Over 1,000 photovoltaic panels generate up to 120 million kWh annually, reducing carbon emissions by about 100,000 tons. The system supplies cooling, heating, and emergency power, significantly enhancing the airport's operational resilience.