Column porcelain insulators and porcelain insulators for electrified railway traffic, of which 530kN grade products are the porcelain insulators with the highest strength grade among the series of suspended insulators in China at present, and are the necessary insulators for developing million-volt UHV transmission lines in China. The company has both traditional wet production lines and advanced dry production lines. It has provided a large number of high-quality products for the Three Gorges Project, Ertan, Gezhouba and other major national power construction projects and important railway construction such as Daqin Line, Xiaying Line and Guangzhou-Shenzhen Line. According to the next planning of State Grid, by the beginning of the 12th Five-Year Plan, a "two vertical and two horizontal" UHV backbone power grid will be built. It is estimated that the investment in UHV power grid in 2009-20 10 will be about 83 billion yuan. In the top ten industrial adjustment and revitalization plans issued by the state in 2009, it is planned to spend about 654.38+0.5 trillion yuan on projects such as railway and urban power grid transformation. With the transformation of national power grid, the continuous development of high-grade transmission and distribution lines and high-speed railway construction, the demand for electric porcelain products is also increasing, and all kinds of porcelain insulators produced by the company have stable and broad market demand and development prospects. The representative enterprise is Suzhou Electric Porcelain Factory Co., Ltd.