Saisi x Bogotá Metro | Saisi clock system sets sail overseas! Injecting precise "China heartbeat" into Bogotá Metro

Recently, the first two trains of Colombia's Bogota Metro Line 1 were officially delivered. As the supplier of clock synchronization products and solutions for this line, Saisi's high-precision clock system has gone abroad with the "China train".

1. Bogotá Metro: A Model of China-Colombia Cooperation

On June 24,2025, the first two trains of Bogota Line 1, the largest single transportation infrastructure PPP project in Latin America to date and the first subway line in Colombia's capital, were officially rolled off the production line and delivered in Changchun, China, sparking enthusiastic responses in Colombia.

Bogota Mayor Galan attended the delivery ceremony online, praising it as a "milestone event" in realizing the city's 80-year "subway dream". More than 10 mainstream media outlets in Colombia focused on the coverage, highlighting the technical highlights and safety performance of the train, and highly commending the "China speed".

As a supplier of time synchronization products and solutions for the Bogota Metro, Saisi's independently developed and designed high-precision clock system will officially "go global" with the trains, providing a precise "China time" benchmark for this key South American subway line.

This project marks Saisi's latest breakthrough in Latin America, following its track record in rail transit projects across Asia, Africa, and Europe. It not only demonstrates international recognition of Saisi's technical prowess and product reliability, but also underscores the company's global leadership in time-frequency synchronization technology for rail systems.

2. Saisi clock system, traveling with the train abroad

The efficient and safe operation of modern rail transit relies on precise time synchronization. As the "nerve center" for train dispatching, signal control, passenger information services, and system-wide coordinated operations, a unified and reliable time reference is of paramount importance.

As a representative enterprise in the high-end time-frequency field of China, Saisi has customized a high-precision and highly reliable rail transit dedicated clock system (also known as a master-slave clock system) for the Bogota Metro project, leveraging its profound technical expertise in time-frequency fields and extensive global rail transit project experience.

The system utilizes a GNSS dual-mode satellite timing engine, which achieves millisecond-level time synchronization accuracy across all critical nodes along the entire route—including control centers, stations, depots, and operational trains—via network protocols such as NTP/PTP.

As this batch of trains carrying China's technology and China-Colombia friendship heads to the South American continent, Bogotá citizens are one step closer to experiencing safe, efficient, and convenient subway services.

3. Global Expansion: Saisi Paves New Path for International Growth

Based in China, Saisi has expanded its global presence. This time, following the "China train" abroad, it also marks the strategic achievement of Saisi's deep cultivation in the international market. From the top ten global PPP classic cases, such as Mexico's Metro Line 1, Africa's first electrified railway the Addis Ababa-Djibouti Railway, and Southeast Asia's high-speed rail benchmark the Jakarta-Bandung High-Speed Railway, to Bogotá 's smart rail transit, Saisi's clock system has illuminated rail transit networks across six continents.

Looking ahead, Saisi will harness technological innovation as its core driver, employing cutting-edge time-frequency technologies to pioneer new applications, domains, and markets. By accelerating the transformation of scientific achievements into tangible productivity, Saisi will infuse precision into global rail transit networks.