Tomocube

Tomocube makes advanced cell-imaging instruments that let researchers and clinicians examine living cells in three dimensions without staining or labeling them, using a technology called holotomography.

Its instruments are used in biomedical research and diagnostics. Listed on KOSDAQ, Korea's tech-focused small-cap exchange, the company earns the large majority of its revenue from its holotomography instrument line, with consumables and services making up only a small share. Most of its revenue comes from overseas markets rather than domestic Korean sales.