Cummins (USA): A global leader in diesel engine manufacturing, with products widely used in heavy-duty trucks, construction machinery, power generation equipment, and more.

MAN (Germany): Famous for heavy-duty diesel engines, commonly used in trucks and marine propulsion.

Perkins (UK): Widely applied in marine and industrial machinery, known for stable and reliable performance.

Volvo (Sweden): Known for commercial vehicle and construction machinery diesel engines, with leading quality and technology.

MTU (Mercedes-Benz, Germany): A high-end diesel engine manufacturer with excellent product performance.

Deutz (Germany): Known for independently manufacturing diesel engines with a good reputation.

Mitsubishi (Japan): Holds a certain market share in automotive and marine diesel engines.