China's first domestically developed 300 km/h "Harmony" EMU (Electric Multiple Unit) rolled off the production line on the morning of December 22, 2007, at CSR Sifang Locomotive Co., Ltd. This milestone marked a significant leap in China’s railway technology, placing its passenger transport equipment among the world’s most advanced systems. With this achievement, China became the fourth country—after Japan, France, and Germany—to independently develop high-speed EMUs capable of reaching 300 km/h.
Wang Yongping, a spokesperson for the Ministry of Railways, highlighted that the "Harmony" EMU is based on the integration and optimization of existing 200 km/h EMU technology. One of the units achieved a localization rate exceeding 70%, showcasing China's growing technological self-reliance. Compared to its 200 km/h predecessors, the 300 km/h version demands higher performance standards, including greater power output, improved aerodynamics, smoother operation, and enhanced air-tightness. These advancements significantly increased the technical complexity involved in its development.
Zhang Shuguang, deputy chief engineer at the Ministry of Railways, emphasized that CSR Sifang has not only mastered key technologies such as EMU assembly, car body design, and bogie systems but also established a world-class 300 km/h EMU platform. This accomplishment places China at the forefront of global high-speed rail manufacturing and marks a major step forward in the country's transportation industry.
Zhao Xiaogang, General Manager of China South Locomotive Group Corporation, noted that within just four years, China had risen to the ranks of leading high-speed train manufacturers worldwide, achieving a dramatic speed increase from 160 km/h to 300 km/h.
The new 300 km/h "Harmony" EMU features a sleek, aerodynamic design that closely resembles the earlier 200 km/h models. The train consists of eight carriages, all of which are seated, with the seventh carriage designated as a first-class cabin. Notable upgrades include additional bars in the dining car and an LCD screen in the first-class cabin, enhancing passenger comfort and entertainment options.
Ma Yunshuang, deputy director of the Technical Center at CSR Sifang, pointed out that the train uses a lightweight aluminum alloy body with a minimum thickness of just 1.5 mm, making it the lightest EMU of its kind globally. This design contributes to better energy efficiency and environmental performance.
Additionally, the new EMU is equipped with longitudinal shock absorbers between each carriage, reducing jolts and improving ride stability. It also includes a semi-active suspension system and an emergency ventilation system, further enhancing safety, comfort, and overall travel experience at high speeds.
Following the completion of the first domestic 300 km/h "Harmony" EMU, CSR Sifang quickly moved into mass production. It was expected that the first batch of 10 units would be delivered by March 2008. Wang Yongping confirmed that after rigorous testing, the EMU would officially begin service on the Beijing-Tianjin intercity railway on August 1, 2008, marking a new era in China's high-speed rail network.
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