C919 aircraft is a large civil jet aircraft independently developed by China in accordance with international civil aviation regulations, and owns independent intellectual property right. C919 aircraft has a layout of 158 to 168 seats, and a range of 4,075 to 5,555 kilometers. So far, the project demonstration, feasibility study and pre-development have been completed, the program enters the engineering development phase. The first aircraft rolled out on November 2nd, 2015. On May 5th 2017, C919 made the first test flight. A total of 815 orders have been obtained from 28 customers.