China, Wuhan GuoDian HuaRui Power Test Technology Co.,Ltd. ，
whose preexistence is GuoDian Wuhan High-voltage Testing Research Institute, has combined the essence of institutional reform and science & technology industry with the progress and development of high-voltage technology.Is approved by the ministry of commerce of China has right of import and export trade and business development and producers.
As a producer and researcher having its own independent intellectual property rights, it is the domestic professional producer of transmission and transformation measuring and testing equipments of big current & high voltage in complete set. Also, it is the earliest institute who has researched and developed the technology of high voltage testers, which is applied by our competitors in manufacturing productions through technical transformation. In aspects of producing domestic testing and special transformers and its varieties, it is also one of the largest, the strongest and the most outstanding manufactures in production capacity and technology strength. Domestically, there are no companies preceding us in technically developing high-tech products and we are endowed with successful experience and accumulation of the sophisticated technologies. Situated in the high-and-new technology development zone of WuHan East-lake, it has foundered and registered as a joint-stock hi-tech company comprehensively covering doing research, design, manufacturing, sales and service support and applies the modernized and collectivize management system. The subsidiaries includes: the original Specialized Equipment of Power Testing Factory, Testing Transformer Factory, GuoDian HuaRui High-voltage Technology Co.,Ltd.，JinGu Power Finance Company, and marketing center (Departments of international cooperation and domestic marketing).