We, STX Engine, started with our business to be designated as a defense company in 1977 and established a factory for defense purposes in 1988. Moreover, we have grown into a largest defense diesel engine manufacturer by licensing with MTU. Based on the aforementioned fact, we manufacture and provide diesel engines for main battle tank, self-propelled artillery and armored vehicle to ROK Army, for destroyer, frigate, patrol vessel and support vessel to ROK Navy, for patrol vessel to Korea Coast Guard as well.

Next-generation wheeled military vehicles are essential to secure maneuverability and survivability for efficient power operation even in the worst weather and terrain conditions, so we have developed a run-flat product with pure domestic technology that can drive to a safe zone where tires can be repaired and replaced with quality that meets the standards of the United States and NATO (North Atlantic Treaty Organization) while ensuring stable steering and driving performance by applying our unique design in the event of tire pressure loss due to tire damage. Based on this, we produce and supply run-flat-related products to wheeled military vehicle manufacturers.

RAIBO2 is a quadrupedal robotic platform that uses four legs to navigate to designated locations, observe its surroundings. Based on state-of-the-art robotic control technology, deep reinforcement learning enables highly dynamic, robust, and efficient locomotion. Furthermore, the in-house integration of hardware and software facilitates energy and design optimization, while allowing for extensive customization.

The ACTUS® IR Flashlight emits a low output of less than 100mW with a wavelength range of 830 to 875 nm, classified as a Class 3B laser. Designed for reliable performance in extreme environments, it can withstand specific storage and operating temperature ranges. Powered by a single CR123A lithium battery, it offers extended operational time, while its robust 6061-T6 aluminum construction ensures durability. The lightweight, compact design makes it easy to carry and use in the field.

The QVM-200 is an ultra-compact video transmission module mounted on a small device that compresses camera video in real time and transmits it to a remote control device. This product features a built-in H.264/H.265 codec, compressing high-definition video at FHD (1920x180p) @ 60fps and UHD (3840x2160p) @ 30fps. It also supports various video transmission protocols, enabling real-time video control and operation. In particular, the QVM-200's built-in real-time high-compression video transmission technology enables ultra-low bandwidth video transmission, ensuring stable video transmission even in wireless environments with extremely limited bandwidth. It provides a MIPI camera interface and a USB port for connecting EO and IR cameras. Its minimal size and weight allow it to be installed even in ultra-compact drones with limited space, weight, and power consumption.

The Sparrow-HD is a cutting-edge, low-SWaP 5μm MWIR detector module engineered to meet the stringent demands of the defense wide distribution market. Its innovative design ensures exceptional performance while minimizing size, weight and power consumption, making it a game-changer in the industry. Sparrow-HD is based on two mature sensing material technologies: • XBn with 4.2μm cut-off, operating at 150K and enabling minimal power consumption • Hot Full-Mid-Wave (HFM) with 4.85μm cut-off, operating at 120K and supporting up to 200Hz

KJF designed and fabricated A320 Sharklet Moving Line

NarSha is a dedicated small satellite for monitoring methane (CH₄) emissions, a key contributor to the climate crisis. It is the first satellite of its kind in South Korea to be developed and led by a private company. The launch of NarSha-1 is targeted for the fourth quarter of 2026.