Guodian Nanjing Automation Co., Ltd., established in 1940 and situated in Nanjing, China, specializes in the production and sale of static protective relay devices across the Chinese market. The company delivers an extensive array of advanced technological solutions tailored for diverse critical industries. Its offerings encompass state-of-the-art security, protection, and monitoring systems; integrated solutions for thermal power plants; and information technology and automation solutions for hydropower and water conservancy, including frameworks for hydroelectric facilities and specialized geotechnical and water resource security monitoring. It also provides comprehensive wind power technologies, featuring wind turbine generator systems, package transformers, power converters, pitch control mechanisms, and dedicated monitoring platforms, as well as photovoltaic solar power generation systems. Further contributions include power transmission and distribution solutions, such as smart substations, dispatch automation, and grid security and stability platforms; automated distribution network solutions and associated high and low voltage equipment; master station systems for electrical measurement information management and intelligent energy metering terminals; and specialized solutions for electric railways, alongside urban rail and track-based transit systems. Additionally, the company offers industrial automation services and solutions focused on energy conservation and environmental protection, covering process control for water and sewage treatment plants, digitalized mine safety management systems, and energy consumption monitoring platforms. These sophisticated products and services are widely deployed across sectors such as electric power, municipal utilities, transportation, water resources, petrochemicals, mining, metallurgy, and construction, among others.