On November 12, today, at the 15th China Air Show, the joint stock company of Air China and the Commercial Aircraft Corporation of China signed the first user framework agreement of the C929 passenger aircraft, intending to become the world's first user of the C929 wide-body passenger aircraft. C929 is a jet wide-body passenger aircraft independently developed by our country, with a seat class of 280 and a range of 12,000 kilometers. Preliminary design work is underway