Its leading products include 110 kV and above voltage level of high voltage switches ( GIS, GCB, isolating switches, ground switches ), transformers ( power transformers, converter transformers ), reactors ( smoothing reactors �shunt reactors ) �power condensers �instrument transformers ( CVT, CT, PT ), insulators ( power substation electric porcelain products �composite insulator products ), cannula, zinc oxide arresters, direct current transportation valves, etc . China XD Group is the production base of high voltage, extra high voltage and extreme high voltage AC / DC power transmission and distribution equipment and other electrical products.