Dawonsys

Dawonsys makes specialised power-conversion systems, equipment that takes standard electrical supply and transforms it into the precise voltage, current, and waveform that demanding industrial processes require.

Its customers include nuclear-fusion research programs, plasma-process facilities, steel and chemical plants, and railway operators who need purpose-built electric railcars. Listed on KOSDAQ, Korea's tech and small-cap exchange, the company draws the largest share of its revenue from its railway-vehicle segment, with additional lines covering nuclear-fusion power supplies, plasma power systems, and rectifiers.