Aviation Industry Corporation of China, Ltd. (AVIC for short) is a state-owned extra-large enterprise under the administration of the central government. Its main business includes the research and development, manufacturing and maintenance services of aviation weapon equipment, turboprop regional aircrafts, helicopters, general aircrafts, UAVs and airborne system equipment, as well as advanced manufacturing and production services related to the aviation industry. The Group has more than 100 member units, 24 listed companies and 400,000 employees. In the fields of military aviation and defense, AVIC has developed a series of fighters, fighter bombers, bombers, transport aircrafts, training aircrafts, surveillance aircrafts, helicopters, strike aircrafts, UAVs and other aircrafts, comprehensively studied and researched air-to-air, air-to-surface, ground-to-air missiles, and carried out airborne system development, aeronautic technology research and test, to provide advanced aviation weapon equipment and logistics service assurance for the national defense security. In the field of civil aviation, AVIC has independently developed the "MA" series regional aircrafts, AC series civil helicopters, AG series aircraft, Y-12 series aircrafts, Kestrel 500, Seagull 300 and SF50 lightweight corporate aircrafts, as well as Cirrus series general-purpose aircrafts and civilian drones to fully support the development of C919 large passenger aircrafts and ARJ21 regional aircrafts, and has developed the aviation subcontract production business to provide high-quality and reliable civil aviation products for domestic and overseas customers. In addition, it is also committed to promoting the development of the general aviation industry. In the fields of industrial manufacturing and modern service industry, AVIC has integrated the aviation high-technology into the civil field, strived to develop the advance manufacturing industries such as auto parts, new-type display, printed circuit boards, photoelectric connectors and high-e