The company was founded on February 28, 2001, and first issued A-shares to the public in September 2003 and listed on the Shanghai Stock Exchange on October 16. The company is mainly engaged in R&D, design, manufacturing, sales, engineering services and general contracting of smart grids, digital energy integration, low-carbon energy, rail transit and industrial automation equipment. The main products include power grid safety and stability analysis and control, power grid scheduling automation, power market, new energy grid-connected control, next-generation centralized control, next-generation autonomous and controllable substation monitoring, DC transmission systems, flexible AC transmission systems, collaborative source network load storage control, online monitoring of transmission and transformation, unified platform for smart distribution networks, flexible low voltage interconnection in distribution networks, next-generation smart smart meters, new collection terminals, demand side response, virtual power plants, super charging piles, vehicle network interaction, etc. The company was approved to build a national key laboratory for risk prevention technology and equipment for power grid operation, and has laboratories for regional integrated energy, intelligent distribution networks, DC distribution networks, etc. Corporate honors: Advanced Collective of Central Enterprises, Civilized Units in Jiangsu Province, Civilized Units in Nanjing, Advanced Units for Open and Democratic Factory Management in Jiangsu Province, “Science Reform Demonstration Enterprise”, key high-tech enterprises in the National Torch Program, key software enterprises within the national planning layout, etc.