As a high-tech privately owned company, Xiangtan Zhongji Power Station Auxiliaries Manufacturing Co., Ltd. integrates research, development and manufacture as a whole. Since the establishment of the company, it has been dedicated to the research and development of products in the hydropower industry. The ZJ series products developed by the company have been widely used for water supply systems in power plants and pump stations. Among them, ZJY46H pressure reducing valves have been awarded the technology progress award by the former Ministry of Power Industry. Such products have been put into operation in domestic and international power stations and pump stations such as Goupitan, Zipingpu, Baozhusi,Tianshengqiao, Ertan, Xiaolangdi, etc. Characterized by the highest head of 370 meters, the maximum water supply of 5000m 3 /h, and Single stage pressure release, they are quite popular with users due to stable quality, long service life and convenient maintenance. The unique technologies of the products have filled up the domestic blank.

In 1998, our company cooperated with HYOROCHINA ZHONGNAN ENGINEERING CORPORATION and undertook the scientific research into pressure reducing valves of large diameter for Three Gorge Power Station. Models in a scale of 1:1 were put into operation in Baozhu Temple Power Station. In 2000, the Three Gorges Power Station organized experts to carry out acceptance inspection on them and they were highly thought of by the experts. Currently, the products are in stable operation.

The company has been paying special attention to the investment in scientific research, so in 2002, several more products have won patents of China, and technologies of the products have been continuously upgrading and improved. A series of products (including ZJY46H pressure reducing valves etc) with independent intellectual property rights have gradually come into shape and quality of the products has reached or exceeded international advanced level. They have completely replaced those imported in such power stations as Tianshengqiao, Zipingpu and Goupitan, etc. In the same year, the company took the lead among other companies of the same industry in obtaining ISO 9001:2000 Quality Certification System; To make use of the advantage platform, in 2007, the marking center of the company was moved to Beijing and Beijing Era Zhongji Scinece&Technology Development Co., Ltd. was established; In 2009, the products passed in Beijing the inspection and approval from experts, who agreed that: The ZJY46H full piston-type pressure reducing valves controlled by the pilot valves of jet pump jointly researched and developed by Beijing Era Zhongji Scinece&Technology Development Co., Ltd. and Xiangtan Zhongji Power Station Auxiliaries Manufacturing Co., Ltd. are of mature technologies, and they have reached international advanced level.

There are now 82 staff members in our company, among whom, 32 are technicians of the intermediate or senior level. We stick to the purpose that “furnish the hydropower with first-class equipment, and serve the hydropower with first class technologies”. To better satisfy the demand for the development of our products and to bring them to the world, enquiries from new and former clients are warmly welcome! A field inspection of the product quality and their uses to the power station by users is welcome!