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-changers.

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, ZVM,

ZM and ZV series 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.