Bistos

Bistos makes medical devices that monitor and care for unborn babies and newborns, including fetal heartbeat monitors, jaundice treatment units, and infant incubators, as well as breast pumps and general patient-monitoring equipment for broader clinical and home use.

Its products reach hospitals, clinics, and consumers across a wide range of countries, with the vast majority of its revenue coming from exports. Listed on KOSDAQ, Korea's tech and small-cap board, the company derives most of its sales from fetal and neonatal devices, though it has been steadily expanding into home-use and general medical equipment.