Beijing Dinghan Technology Group Co.Ltd engages in the research and development, production, sale, and service of rail transit equipment in China. The company's ground electrical equipment includes ground power supply solution, platform door system solution, and braking energy management solution; intelligent station solutions; and rolling stock electrical equipment, such as rolling stock special cable solution, rolling stock air conditioner system solution, CRH3 auxiliary power supply system for EMU, and DC600V power supply system solution for passenger train. It also offers HD video detection system for freight train loading state and rolling stock detection system solution; and after-sales and operation maintenance services. The company was formerly known as Beijing Dinghan Technology Co., Ltd. Beijing Dinghan Technology Group Co.Ltd was founded in 2002 and is based in Beijing, China.