FIRSTEC Co., Ltd.

FIRSTEC sells almost nothing a soldier would recognise by name, and it is inside a striking share of what Korea fields. Founded in Changwon in September 1975 as Cheil Precision Industry, listed on the Korea Exchange since 1989 and now part of the Foosung Group, the company builds precision control components and subsystems that other primes integrate. Its own site divides the work into five areas. Guided weapons is the oldest. FIRSTEC supplies pneumatic and electromechanical actuation systems, guidance control units, fire control units, thrust vector control hardware, high pressure vessel assemblies and wiring for a list that runs through Hyunmoo, Cheongung II, L-SAM, the Raybolt anti-tank missile, Bigung, Cheonma, the Hongsangeo anti-submarine rocket, Haeryong, Haegung and Biryong. That spread across surface to air, anti-tank, anti-ship and anti-submarine families is unusual for a supplier of this size. Most of it reaches the end user badged as somebody else's system. FIRSTEC has no platform of its own to sell, which is precisely why it turns up inside so many of them.

The ground mobility vehicles and artillery pieces area covers control panels, electrical power units, driving controllers, fire control components and cooling units for the K1 and K1E1 tanks, the K9 and K9A1 self-propelled guns, the K10 ammunition resupply vehicle and Vulcan air defense mounts. It also makes an automatic fire extinguishing system that reacts inside 250 milliseconds. Aerospace is the broadest line. FIRSTEC produces air data systems, night vision compatible cockpit control panels, throttle quadrant systems, landing and search lights, wiper systems, landing gear actuation, propulsion and fuel components, environmental control units in both air cycle and vapour cycle forms, and aircraft static and reliability test rigs, fitted across the KF-21, T-50 and FA-50, KUH-1 Surion, the LAH and LCH programmes and several unmanned aircraft.

Naval and underwater work is narrower and more distinctive. The company builds the torpedo acoustic countermeasure launcher that lets submarines break contact, submarine signal ejectors, mine laying systems for port defense, and the cooling system for the multifunction radar on Korean warships. The fifth area, unmanned systems, is where the recent investment has gone. Products include an electric multi-joint manipulator, an explosive ordnance disposal robot built around it, cable assemblies for wired control in jammed environments, cooling for unmanned ground surveillance vehicles, an unmanned surface vehicle for maritime patrol, power supplies for underwater ISR vehicles, a hydrogen fuel cell cargo drone and the UCCR vane system for a high speed compound rotorcraft. Mine clearing robots developed with Korean defense research institutes sit in the same lineage. Revenue reached about 295 billion won in 2025. The company is also pushing into AI based safety and security work outside defense.