A Rolls-Royce aircraft engine on view during the Hannover Messe industrial trade fair on March 31, 2025. Ronny Hartmann | Afp | Getty Images British aerospace and defense company Rolls-Royce announced it is investing $75 million to expand its engine manufacturing facility in Aiken, South Carolina. The investment will boost output of mtu Series 4000 diesel engines, which are used …
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