GFI

GFI makes ultra-lightweight fire-suppression capsules that detect and extinguish fires automatically, without any wiring, piping, or external power, the capsule's chemistry triggers a reaction when surrounding heat reaches a critical level.

Its products are supplied to manufacturers of energy-storage systems and uninterruptible power supplies that use rechargeable batteries. Listed on KOSDAQ, Korea's tech and small-cap board, the company's core technology is a microencapsulation process it claims to have pioneered globally, and it applies that same platform to produce fire-safety sheets and kits specifically designed for battery installations.