Changchun Sanding Transformer Co., Ltd.(Former Northeast Power Transmission Group，Changchun TransformerFactory), which was one of the key enterprises of the Chinese Ministry of Engineering Industry, established in 1952.

　　In 2003, the factory was renamed as Changchun Sanding Transformer Co., Ltd.. After more than 60 years ofdevelopment, the company now is one of the national leading manufacturers and solution providers of high voltageelectrical equipment and engineering.

　　In 2012, the company invested USD 180 million to build a modern industrial park with the area of 350,000 squaremeters in Changchun New Zone. The transformer plants cover a floor area of 220,000 square meters, building area of110,000 square meters in Changchun Sanding Industrial Park .