LONDON - Rolls-Royce PLC, the world's second-largest aircraft engine maker, said Wednesday it won a US$450 million (euro339.7 million) order to provide engines for a fleet of 50 Airbus A320 aircraft ordered by China Southern Airlines.

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The contract also includes a provision for maintenance, the company said in a statement.

Rolls-Royce has delivered the V2500 engine to more than 120 customers worldwide since 1996 and the technology powers more than 1,300 aircraft.

Rolls-Royce shares slipped 1.1 percent to 438 pence (US$8.59; euro6.48) on the London Stock Exchange.