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The predecessor of Guizhou Changzheng Electric Co., Ltd. is Changzheng Electrical Appliance First Factory. It 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 changer.

Our company began to independently develop on-load tap-changer in the early 1970s. We introduced the whole set of production and manufacture technique for tap-changer from foreign country, we developed ZVMD, ZVMB, ZM and ZV series etc tap-changer which has proprietary intellectual property rights through digestion, absorption and innovating, our products reach to the international advanced level and won the title of national and provincial famous brand. Our multiple products have won national and provincial science and technology progress award, new product award, science and technology achievement award and named the national excellent products.

Our products are widely used in electric power, petroleum, chemical industry, metallurgy, railway, light industry, real estate and so on, and exported to more than 30 countries and regions. The company received acclaim by old and new customers with the super quality and excellent service.

Our company has complete quality management system and obtained the certificate of ISO9001:2008 、 ISO14001:2004 and GB/T28001-2001 (this standard covers the all technical contents of OHSAS 18001:1999).

New Changzheng industrial park with the investment of 350 million by our company has been put into service. Now it has built as the biggest production base of tap-changer in China.

With the principle of “security sources in quality and confidence sources in service”, our company will continue to insist on the strict spirit of scientific innovation and improve the product quality constantly, pursue the excellent quality and try our best to create the “Changzheng” brand as the domestic first-class brand.

 
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