Founded in 1988 as Dong Sung Electronics, we started with cable assembly(Harness) business and soon, expanded to coil winding and miniature motor manufacturing business.

In accordance with the rapid trend of line transfer into newly emerging China market by the major Korean Home appiance manufacturers from beginning of 1990s, Dong Sung established Synchronous moter factory in 1993 in Tianjin city to supply those motors for not only Korean-Chinese but also pure Chinese microwave oven manufacturers.

In 2002, Dong Sung became a vertically integrated motor manufacturer in China by establishing Tianjin Chung Song Techvalley specializing in coil winding and motor sub-assemblies.

In an effort to reinforce quality assurance, Dong Sung Headquarters acquired ISO 9001 in June 2002 and diversified its product rang into automotive relays by taking over the Relay Division of Techvalley Ltd. in Feb, 2003 that was also certified for QS 9000 by end of 2003.

Now, We are all proud of highly reliable quality and invincible price competitiveness on our products. Nevertheless, we will continue our efforts with future-oriented business mind to cope with the challenges of ambiguous future.