Samyoung Machinery Co., Ltd., founded in 1975, is a prominent South Korean manufacturer specializing in diesel engines and components for the locomotive, marine, and power plant industries. The company produces high-performance parts such as pistons, cylinder heads, liners, and connecting rods, known for their reliability and environmental friendliness. Samyoung supplies top-tier clients globally, including Hyundai Heavy Industries and KORAIL, and emphasizes innovation with vertical integration, enabling in-house control over design, casting, machining, and assembly processes.