Rolls-Royce Holding Plc signed an agreement with HNA Group for engine services worth $2.4 billion during President Xi Jinping's visit to the UK.

The agreement will power a total of 44 aircrafts, which have already been ordered by HNA Group's airlines subsidiaries.

The agreement covers Trent 700 engines and TotalCare service support for HNA Group's 20 Airbus A330 orders and service support for Trent XWB engines powering 15 Airbus A350-900 orders.

Also included in the deal are service support for Trent 700 engines powering five A330 freighters and four Airbus A330s.

Chen Feng, chairman of the HNA Group said, "Rolls-Royce will provide both engine power and engine services for our new aircraft and we look forward to further developing our relationship as we bring these new aircraft into service."