Aero Engine Corporation of China (AECC) is principally engaged in the design, development, production, maintenance, marketing and after-sales service of military and civilian aircraft power plants, secondary power plants, gas turbines, helicopter transmission systems, and aeroengine technology derivative products. AECC has accumulatively developed more than a hundred types of aero-engines, gas turbines and helicopter transmission systems, and made outstanding contributions to China's national defense weaponry and national economic development.