Kunshan Jiangjin Machinery Co., Ltd. (JM), a subsidiary of Chongqing Jiangjin Shipbuilding Heavy Industry Co., Ltd. under China State Shipbuilding Corporation (CSSC), was established in October 1991. Located in the scenic city of Kunshan, Jiangsu Province, the company occupies an area of 43,800 square meters and is a 40-minute drive from Shanghai Hongqiao Airport. JM is a specialized enterprise engaged in the research, development, and manufacturing of large intelligent marine diesel engine fuel injection systems, exhaust systems, and impeller machinery products. The main products include:

• MAN Series Medium-Speed Engines: High-pressure fuel pipes, water jackets, cylinder heads, and cylinder unit assemblies, among others.
• MAN Series Low-Speed Engines: Exhaust valve mechanisms and cylinder head assemblies, fuel pump and exhaust valve drive mechanism assemblies, hydraulic control units (HCU), hydraulic power units (HPS), and safety control blocks (ACC), among others.
• WINGD Series Low-Speed Engines: Exhaust valve assemblies, fuel supply units, common rail units, ignition fuel supply units, high-pressure fuel pipes, pre-combustion chambers, piston heads, among others.