Airbus and Boeing split a $10 billion order for 35 wide-body jetliners from China Eastern Airlines. as the Asian carrier retires older aircraft and adds new long-haul routes.

China’s second-largest carrier agreed to buy 20 Airbus A350-900s worth $6.16 billion at list prices, together with 15 Boeing 787-9s valued at $3.97 billion, in what will be its first deployment of the industry’s newest twin-aisle models.

The aircraft, due to enter service over four years from 2018, will help satisfy China Eastern’s long-haul needs through 2025, the Shanghai-based airline said in a stock exchange filing Thursday. As part of the same strategy it will retire six Boeing 767s and 12 Airbus A330s by 2020.

Chinese airlines are adding bigger planes as economic growth makes longer flights more affordable. China Eastern, which serves about a dozen locations outside the Asia-Pacific, according to its website, plans to boost international capacity about 20 percent this year.