Henan Sansan Transformer Co., Ltd., merged and restructured on the basis of Luohe Hongda Transformer Factory, is a high-tech joint-stock enterprise integrating the research and development, production, and sale of transformers. Situated in Luohe City, the only inland special zone of China, we staff over 350 employees including 2 management and engineering doctors, 5 senior MBA managers, 10 senior engineers, 20 engineers, and 91 technicians. We have 420 units (sets) of equipment, such as 100-ton overhead cranes, 900KV impulse voltage generators, fully automatic George-modeled length and breadth cutting machines, vertical winding machines, large vacuum-changing drying pans, 1000KVA and 50Hz generator sets, and more.

As a supplier recommend by State Economic and Trade Commission for the renovation project of Two Grids, we always regard quality as the lifeblood of enterprise development and stay focused on quality management in strict accordance with GB/T190012000 Quality System, GB/T240012004 Environmental Management System and GB/T280012001 Occupational Health and Safety Management System. Overall process control is for the production, fabrication, and inspection. Raw materials are purchased from suppliers stringently through multiple parties. For key raw materials, we will send technical staff to the process sites carrying out on-spot supervision and control and perform inspection with advanced instruments to ensure the quality. Technical standards are seriously followed during the production process, reaching internationally advanced level.

Laying much stress on technical upgrade, exchange and cooperation at an international scale, we have held technical communication and cooperation with universities and institutes like Sophia University from Japan, Wuhan University of Technology, Shenyang Transformer Research Institute, and Wuhan High Voltage Research Institute. Advanced technology and process have been introduced from Japan, Germany and other countries, and we have set up complete production lines of international leading level and state-of-the-art testing facilities special for various transformers.

Our main products include over 800 specifications of Yuning branded 10kv, 35kv and 110kv series oil-immersed power transformers, amorphous alloy transformers, combined transformers, prefabricated transformers, dry-type transformers, special smelting transformers, and more. Our products are highly reputed both at home and abroad due to reliable and stable quality as well as complete after-sales service.