China's first fully self-contained, full-line contactless network "supercapacitor" modern tram, was launched yesterday at CZ Zhuzhou Electric Locomotive Co., Ltd. According to reports, this city tram has three major advantages: First, it has smashed the "big scorpion", the whole process of running without overhead contact network, eliminating the "visual pollution"; the second is the 9500 Farah "super capacitor" energy storage, The vehicle can quickly complete charging within 30 seconds of the platform area, and can run 3 to 5 kilometers at a time. Third, when the vehicle is braked, more than 85% of the braking energy recovery can be fed back to the super capacitor to form electrical energy storage for energy recycling. What deserves special mention is that the vehicle technology and components of this new electric train have all achieved China's autonomy.