Established in 1997, HYSG produces hydraulic equipment for ship machinery, heavy machinery, and the defense industry.
Based on its “customer first” management philosophy, HYSG has been to growing with its customers by continuously developing through ceaseless efforts, R&D, and experiments.
HYSG’s business areas include ship steering gears and winches, hydraulic equipment for ship engines, hydraulic equipment for construction equipment and defense equipment, and hydraulic systems.
HYSG’s current major export areas are ship engine products, high-pressure hydraulics, and fuel system products.
Prechamber for large engines
This product is for large engines and facilitates the ignition and combustion process in the main combustion chamber, improves combustion efficiency, and reduces emissions.

Pressure-control valve
This is an important valve that prevents overload and regulates the high-pressure of 1050 bar in the fuel supply lines of ship engines to the required pressure as a safety device.

Exhaust valve control unit
This device flexibly controls the fuel injection and opening & closing of the exhaust valve to optimize combustion conditions.
HYSG achieved sales of KRW 7 billion in 2023 and aims to achieve sales of KRW 7.5 billion in 2024. HYSG produces and supplies about 160 types of products, including fuel system products.
The main clients of its marine engine products are WARTSILA, WINGD, HD Hyundai Heavy Industries, and China’s CMS, CMD, and HHM.

“We are proud that our company has contributed to the development of the heavy machinery and ship machinery industries with localization and the advancement of hydraulic equipment. However, without resting on our laurels, we aim to become a world-class hydraulic equipment company by practicing our business approach with a future-oriented management perspective, and follow technical trends,” noted the company’s CEO.
He added, “We will always strive to maintain a pleasant and clean environment with an eco-friendly business technical system. We appreciate your constant support and encouragement.”

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