Guodian Nanjing Automation Co., Ltd. manufactures and sells static protective relay products in China. The company offers security and protection monitoring systems; thermal power plant systems; and solutions for informatization of hydropower and water conservancy, including hydropower automation solutions, and professional solutions of security monitoring for geotechnical engineering and water resources. It also provides solutions to wind power, such as wind turbine generator systems, package transformers, power wind converters and pitch systems, and wind power monitoring platforms; solutions to solar energy PV power generation systems; and power transmission and transformation solutions comprising smart substation, dispatching automation, and grid security and stability solutions. In addition, the company offers distribution grid automation solutions, and HV and LV distribution products; master station systems of electric measuring information management, and smart energy measuring terminals; and electric railway solutions, and urban railway and track traffic solutions. Further, it provides industrial automation, and energy conservation and environmental protection solutions that include process control system solutions for water suppliers and sewage treatment plants; digitalized mine safe production information management systems; and energy consumption monitoring platform systems. The company's products are used in electric, municipal administration, transportation, water conservancy, petrochemical, mining, metallurgy, construction, and other fields. Guodian Nanjing Automation Co., Ltd. was founded in 1940 and is based in Nanjing, China.