Dalian No.1 Instrument Transformer Co., Ltd. was established in 1972, with a total land area of 380,000 square meters and a construction area of 186,000 square meters. The group currently employs over 1,700 staff members. The company operates under a group management model, with its headquarters located in Pulandian District, Dalian. It serves as a manufacturing base for medium and high-voltage instrument transformers, insulated busbars, and high-voltage electrical equipment. The company has also established subsidiaries in Shanghai, Xiamen, and Dalian Economic and Technological Development Zone, and formed a joint venture with Spain's Arteche Company to produce and market current and voltage transformers of 110kV and above. Since its inception, the company has focused on the research, development, manufacturing, and marketing of instrument transformers, becoming a leading enterprise in China's instrument transformer manufacturing industry. The company houses a provincial-level enterprise technology center and is a member of the National Standardization Committee, serving as a primary drafter for the formulation and revision of national and industry standards. The technical performance and quality of its products are at an internationally advanced level. The products have been successfully deployed in key projects such as the Olympic Games, the World Expo, the Hong Kong-Zhuhai-Macao Bridge, and high-speed railways. Dalian No.1 Instrument Transformer has been listed as a major supplier and included in the global procurement networks of international power transmission and distribution equipment giants such as ABB, Siemens, Schneider, and Eaton Power, demonstrating strong competitiveness in both domestic and international markets.