Tianshui Changcheng Switchgear Factory Group Co., Ltd., founded in 1968, is a large professional manufacturing company in China's power transmission and transformation switchgear manufacturing industry. In 1997, the company was incorporated into Lanzhou Great Wall Electric Co., Ltd. with all operating assets of its main business, and successfully went public in 1998 with the stock code 600192. In March 2008, the company was officially restructured and renamed as Tianshui Changcheng Switchgear Factory Co., Ltd. according to the modern enterprise operation mode. In August 2019, in order to fully implement the arrangements and deployment of the reform of Gansu Electric Equipment Group Co., Ltd. and promote the transformation and development of the company from a single product provider to a transmission and distribution industry cluster, the company was renamed Tianshui Changcheng Switchgear Factory Group Co., Ltd. After more than 40 years of efforts by several generations, it has developed into a large specialized company that has gathered a group of excellent professional talents, strong technical development capabilities, modern management, and advanced equipment and facilities. It has total assets of 1.7 billion yuan and more than 1400 employees, including more than 400 professional and technical personnel. Capable of independently developing and researching various types of high and low voltage switchgear, with an annual production capacity of 10000 medium voltage switchgear cabinets and 10000 medium voltage circuit breakers. For many years, the company has taken it as its responsibility to revitalize China's switchgear manufacturing industry and is committed to building itself into a top tier supplier of high-quality transmission and distribution equipment and an integrated service provider for transmission and distribution systems in China.

Changkai Factory Group has a strong R&D team in the domestic medium voltage switch industry, always taking independent innovation as the driving force for enterprise development. In 2009, the company's technology center was recognized as a "national enterprise technology center" by five ministries including the National Development and Reform Commission. In 2011, the company was jointly named a "national innovative enterprise" by the Ministry of Science and Technology, the State owned Assets Supervision and Administration Commission of the State Council, and the All China Federation of Trade Unions. Over the years, the company has participated in the formulation of 28 national and industry standards and specifications, obtained 26 national invention patents and 152 utility model patents, and has undertaken the National 863 Program, Torch Program, and National Science and Technology Cooperation Program, further enhancing the connotation of the "Great Wall" brand and effectively promoting the innovative development of technology in the transmission and distribution switchgear industry. The company has formed a series of complete and reliable product lines in harsh environments such as high parameter switchgear, intelligent medium voltage switchgear, medium voltage high reliability vacuum circuit breakers, gas insulation, and high-altitude medium voltage switchgear, as well as nuclear power 1E level switchgear, and continuously meets market development needs.

Changkai Factory Group adheres to the concept of integrating modern information technology with advanced management, and has achieved modernization of enterprise management through information system integration services. Since 1996, the company has successively completed CAD projects, PDM projects, ERP projects, and CIMS projects (included in the Ministry of Science and Technology's 863 Program and passed acceptance). In 2002, the enterprise took the lead in implementing an enterprise resource management information system in the same industry, and was identified as one of the first batch of information technology demonstration enterprises by Gansu Province in the same year. At present, the company has built and operated "Air Insulation Digital Factory" and "Gas Insulation Digital Factory". Through the application of ERP, PDM, MES, and WMS systems, it has achieved assembly line production, intelligent manufacturing, process inspection, and information management of switchgear and switch components.

Changkai Factory Group's products are widely used in more than 20 industries including national power generation, transmission and distribution, petroleum and petrochemical, metallurgy, building materials, railways, coal, municipal construction, etc., and have made outstanding contributions to national key projects such as the Three Gorges Project, Qinghai Tibet Railway, China Aerospace, nuclear power, South to North Water Diversion, West to East Gas Transmission, and national defense construction. Since its first export to Thailand in 1980, the company has exported its products to 52 countries and regions including Europe, the United States, Australia, Asia, and Africa.

Changkai Factory Group has won many honorary titles, such as "National May Day Labor Award", "National exemplary organization for Spiritual Civilization Construction", "National Integrity Demonstration Unit (AAA ①)", "The Most Influential Brand in China's Electrical Industry", and "China's Top 500 Machinery Industry". In 2010, the company's "Great Wall" trademark was officially recognized as a "China Famous Trademark" by the State Administration for Industry and Commerce. Jiang Zemin, Zhu Rongji, Zou Jiahua, Li Changchun and other party and state leaders visited and provided guidance to the company, all of whom gave high praise.