Established in 1989, DONGWOO has been producing epoxy resin Instrument transformers and insulators to the distribution and the transmission area, worldwide, supplying to Korean market with its share more than 50% and the overseas market such as Siemens, ABB, Schneider, NGK, Nissin, Terasaki, TAMCO, HHI, LSIS, SAMSUNG, KEPCO, TNB, CEB, PLN and so on.

DONGWOO's product scope includes;

- Instrument Transformer & Insulator(Bushing) up to 36kV
- Distribution Transformer up to 36kV (~333KVA)
- Solid Type LBS for Overhead & Underground; up to 36kV
- HV Insulators up to 800kV

Factory Locations by Respective Divisions (KOREA)

- PYEONGTAEK Factory: MV Instrument Transformer & MV/HV Insulator

- NAJU Factory: MV Load Break Switch & Recloser

- UlSAN Factory: HV Insulator