Amogreentech

Amogreentech makes advanced materials and functional components, including high-efficiency magnetic cores that reduce energy loss in electric vehicles and renewable-energy systems, nano-fiber membrane vents that keep moisture out of mobile devices and cars, flexible thin batteries for wearable devices, and energy-storage systems for telecom infrastructure.

Its customers span the electric-vehicle, renewable-energy, smart-grid, and consumer-electronics industries. Listed on KOSDAQ, Korea's tech-focused small-cap board, the company's current revenue comes primarily from its magnetic materials, thermal-management materials, membrane vents, flexible batteries, and energy-storage products, while several other product lines, including water-treatment filters and silicon-carbide power-semiconductor modules, remain in earlier commercial stages.