Chengdu Tangyuan Electric Co., Ltd. originated from the catenary research team of Southwest Jiaotong University. Inheriting the profound professional expertise accumulated over a century by this prestigious institution and upholding the development philosophy of "working together with one heart, creating and sharing together," the company has participated throughout in technological innovation for China’s rail transit electrification and has contributed to the advancement of China's rail transit industry with first-class research capabilities.

After more than thirty years of entrepreneurial development, it has formed six major business segments: intelligent operation & maintenance, smart stations, smart emergency response, robotics, new materials, and new energy. It owns 7 wholly-owned subsidiaries, 9 holding subsidiaries, and 1 equity-participated subsidiary, and is committed to building a world-class high-tech enterprise characterized by rail transit.

The Intelligent Operation & Maintenance business segment was listed on the Shenzhen Stock Exchange in 2019 (stock code: 300789), making it the only privately-owned listed company in China that independently masters core intelligent O&M technologies covering the full systems of rail transit power supply, permanent way, signaling & communication, and rolling stock.