Dalian Institute of High Voltage Transmission Line Insulators and strong technical force, complete test means. Electrical porcelain is mainly responsible for product design and testing, porcelain and glaze formulation, mineral raw materials and physical and chemical properties of cement mixture analysis, and metallographic microstructure of ceramic testing and analysis. Institute for on many occasions to assume the state's key scientific and technological issues, including high-strength porcelain products, DC insulators, composite insulators and to improve the development of porcelain insulator properties of steep waves and so on, filled the gap on many occasions by the national, provincial (ministry), Science and Technology Progress Award for the development of the national electric power industry has made outstanding contributions.
In order to further optimize the product design, improve product performance and reliability of mechanical and electrical company with a well-known domestic and foreign research institutions and laboratories for product testing cooperation. (Electric Power Research Institute in Beijing in cooperation Experimental study on steep waves. The picture shows in the Netherlands KEMA laboratories test products steep wave.)
With the rapid development of power industry, to the special high-voltage insulator is, the direction of the development of large tonnage. Therefore, in order to meet the future needs of the market, millions of volts in order to meet the arrival of power lines, the company has R & D 400 ~ 550kN grades and EPRI commissioned a full-Type test items, and ultimately the national level through the identification of products and technologies. Identification of experts to participate from the State Grid Corporation, EPRI, West porcelain by Tsinghua University and other authorities, the participating experts to 7 years in 11 important to the state line to provide more than 25 films and over 400kN strength grade products and long-term safe operation of the very high performance.

Which, 400kN, 420kN product line has been used for the Three Gorges area and on-line operation. Million-volt high-pressure pilot countries has also been adopted lines developed by our company products 420kN and 550kN. Currently used in good condition.

400 ~ 550kN products successfully developed to improve the level of China's Suspension Insulators to improve China's power industry in the world status of, and fully demonstrated the technology industry, China's national strength, at the same time, import prices of inhibition insulators play a role.