DOOSUNG SYSTEM CO., LTD was established in 1991, and they have expertise in industrial device and LED lighting system. They provide all products of MEAN WELL such as converter (AC-DC / DC-AC / DC-DC), Adapter, Charger and so on. Doosung also have a technical team to respond A/S service and technical inquiries.

Doosung became MEAN WELL's authorized distributor in 2014, and they are concerned with customers' problems and actively respond to them.