Guodian Nanjing Automation Co., Ltd. engages in the provision of industrial power automation equipment in China and internationally. It offers safety and stability control and power plant electrical, as well as high, medium, and low voltage relay protection products; and automation and communication products, such as substation and distribution network automation, system auxiliary equipment, and power supply. The company also provides primary equipment products, including online monitoring, mutual inductor, transformer, and switchgear; track monitoring systems and traction substation for rail transit automation; energy information technology and information security products; hydropower automation and water conservancy automation; and frequency conversion for energy saving and environmental protection. In addition, it offers prefabricated substation, reactive power compensation, and inverter new energy products; and smart grid and power plant, energy information technology, rail transit and building automation, and engineering general contracting solutions. The company was founded in 1940 and is headquartered in Nanjing, China. Guodian Nanjing Automation Co., Ltd. operates as a subsidiary of Huadian Corporation Nanjing Electric Power Automation Equipment Co., Ltd.