Excuse me, is MTU diesel engine produced by MAN AG in Germany? If not, what is their relationship? Is it the company?

No, they are all powerful industrial technology companies in Germany. They are cooperative in product supply and do not belong to each other.

Schihafen Co., Ltd. of Fri Engine and Turbine Alliance.

MTU, a subsidiary of Daimler-Benz Group, is the world's leading diesel engine manufacturer. Its diesel engine power varies from 35kw-9000kw, and it is widely used in ships, heavy-duty vehicles, construction machinery and railway locomotives. MTU not only manufactures diesel engines, but also manufactures complete sets of products for end users.

Mann Group is a leading equipment manufacturer in Europe, and its core business includes commercial vehicles, industrial services, printing presses, diesel engines and other industrial equipment and specialized fields in the construction market. Mann Group has about 76,000 employees worldwide. Although the history of Man Company can be traced back to the establishment of 1758 steel plant, the name Man was officially used in 1908. Mann Group is currently one of the top 500 enterprises in the world. In 2008, Mann Company celebrated its 250th anniversary.

At present, GmbH Commercial Vehicle Company is the largest subsidiary of GmbH Group, mainly engaged in the production of trucks and buses, and is one of the world's major manufacturers of trucks, buses and diesel engines, headquartered in Munich, Germany.