Guizhou Changzheng Electric Co., Ltd. is a professional production of 500kV and below the high and medium voltage electrical components, wind power generation equipment and other products of large national class enterprise, Southwest is the largest production base of industrial appliances. Since 2007, the Long March electrical explicitly states that "professional development strategy", and implemented a "highlight the main electrical equipment to enhance the core competitiveness of enterprises' development plan, the company increased investment in technical improvements and new product development, continue to develop, introduced, including MD-load tap-quality, solid sealing vacuum circuit breakers, ring main units, 2.5MW direct drive wind power machine such as a larger market demand, marketable value-added products, improve the company's product sequence, add a new profit growth point.

the company's main business gradually extended to the equipment from the elements, control systems and power generation equipment industry is gradually upgrade the company from a pure component manufacturers rose to become able to provide complete solutions for system integrators and machine manufacturers. Company consists of high and low voltage electrical division, equipment division and a provincial-level technology center, with Guizhou Changzheng Electric Power Equipment Co., Ltd., Guizhou Changzheng medium voltage Switchgear Co., Ltd., Beihai Yinhe Switchgear Co., Ltd. a wholly owned subsidiary of three and Ai Wan Meredith holding Guangxi Yinhe Wind Power Limited. The main production VM, MD, MB, M, V-load tap-quality series of high-load tap, solid seal vacuum breaker, GLX24 series SF6 gas insulated ring main unit. With an annual output of transformer tap-5000, 40,000 medium-voltage components, equipment/sets of production capacity.

Company-owned Guangxi Yinhe Ai Wan Meredith Wind Power R & D 2.5 MW direct drive permanent magnet wind generator has been off the assembly line in February 2009. The project's design and product performance in a leading position in the international arena, not only to the domestic power units to make up for gaps in the market, and can increase the renewable energy technology development efforts, so that China's new energy industry in the development of technical capabilities , the scale of production, localization and achieved a major breakthrough. The company was named the National CAD Application Engineering Model Enterprise, National 863 Program CIMS demonstration enterprises, high-tech enterprises, the national IPR pilot enterprises and units, a number of products have gained national and provincial scientific and technological progress awards, National New Product Award, the National and provincial famous brand products are widely used in electric power, petrochemical, rectifier, metallurgy, railway, light industry and real estate industries, and exports to Japan, Malaysia, Indonesia, India, Australia, Vietnam, Singapore, Turkey, Russia, Nigeria other countries, to perfect the quality of products and quality service renowned domestic and foreign markets.