ARJ21 aircraft is the first short-medium range turbofan regional aircraft independently developed by China in accordance with international civil aviation regulations, it owns independent intellectual property right. ARJ21 aircraft has a layout of 78 to 90 seats, and a range of 2,225 to 3,700 kilometers. ARJ21-700 aircraft obtained the Type Certificate from Civil Aviation Administration of China (CAAC) on December 30th, 2014 and the Production Certificate (PC) from CAAC on July 9th, 2017.So far, ARJ21-700 aircraft have been entered into route operation formally. The market operation and sales status is good. A total of 596 orders have been obtained from 22 customers.