Hunan Electric Power Insulator & Apparatus Factory (SANDIAN fo short) is located in Liling of China, It is a corporation with nearly 50 years specialize in manufacturing and exporting of T&D high voltage electric equipments. Such as 12kV~550kV instrument transformers, surge arresters, porcelain insulators. It takes 1 hour to arrive at Changsha International Airport.

SANDIAN  covers an area of 260,000 square meters and a total asset of 1 billion with more than 1200 staff, including 150 professional technicians, It has 25,000 square meters modern fully closed and air purified workshops and superior manufacture equipments, advanced test equipments in the first class of international level, such as power frequency test equipment of 1000kV without partial discharge and 3000kV impulse voltage generator and etc.

SANDIAN  is mainly producing high-voltage instrument transformers, medium voltage instrument transformers, surge arresters, fuse cutouts and porcelain insulators. In China, the first piece of 110kV porcelain bushing insulator and DC suspension porcelain insulator were all made by SANDIAN. It takes the leading position in the field of HV instrument transformers in China. With abundant technological resources, SANDIAN is powerful on technology development. The products are in conformity with the standards of IEC, ANSI, BS, DIN, AS etc.

SANDIAN has a perfect quality control system, and implements comprehensive quality management procedures, while controlling product quality management procedures, while controlling products quality strictly and our products is in the conformity of ISO9001:2000 standard. The factory has consummated certificate of ISO9001 quality management systems, ISO14001 environmental management systems, and GB/T28001 occupational health and safety management systems.The engineering technicians have abundant designing experience, and the workers and debugging personnel own exquisite technologies. In the past few years, they have provided equipment of excellent performance, wide varieties and credible quality to customers from around the world.

SANDIAN in Chinese and are well-known trademarks in China. It has built good business relationship with more than 20 countries in the world. SANDIAN welcomes friends from all walks of life to visiting our company and having conversation for products advisory, technology and business.We will offer the best technical support program, excellent quality products and competitive price to the global electric transmission and distribution projects.