Guizhou Changzheng Electric Co., Ltd. is a new and high-tech enterprise specially engaged in research, development, manufacture, sale and service of transformer on load tap changers and off-circuit tap-changers. Our company was the earliest manufacturing enterprise who began to manufacture the tap changer. We began to independently develop on load tap changer in the early 1970s, now we independent researched on load tap changer of ZVMD, ZVM, ZMD, ZM, ZV and etc. series reach to the international advanced level and won the national and provincial famous brand title. Our products are widely used in electric power, petroleum, chemical industry, metallurgy, railway, light industry, real estate and so on, we have the certificate of foreign trade operation, the products exported to more than 30 countries and regions, and received acclaim by old and new customers with the super quality and excellent service.
