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Aircraft Maintenance & Engineering Corporation (Ameco) is a joint venture between Air China and Lufthansa, with 75% shareholding by Air China and 25% shareholding by Lufthansa. Ameco holds wide range of business covering line maintenance, aircraft overhaul and painting, engine overhaul, component overhaul, landing gear overhaul, business jet services, engineering, training calibration. It is authorized by CAAC to act as a DMDOR. Currently, it possesses maintenance licenses from al