Beijing Dinghan Technology Group Co. Ltd. researches, develops, supplies, sells, and maintains high-end electrification equipment and smart solutions for China's rail transit industry. Its ground electrical equipment includes ground power supply, platform door systems, and braking energy management, along with intelligent station solutions. The company also offers rolling stock electrical equipment such as special cables, air conditioner systems, auxiliary power supply for EMU, and DC600V power supply for passenger trains, plus HD video detection for freight train loading and rolling stock detection systems. It provides after-sales and operation maintenance services. Formerly Beijing Dinghan Technology Co., Ltd., the company was incorporated in 2002 and is based in Beijing, China.