Air China Limited, along with its subsidiaries, is engaged in the provision of airline, airline-related services, including aircraft engineering services, air catering services and airport ground handling services, mainly in Mainland China, Hong Kong and Macau. It operates in two segments: the airline operations segment, which is engaged in the provision of air passenger and air cargo services, and the others segment, which consists of the provision of aircraft engineering, ground services and other airline related services. The Company’s subsidiaries include Air China Cargo, China National Aviation Company Limited, Air China Group Import and Export Trading Co. (AIE), Zhejiang Air Services Co., Ltd., Air China Shantou Industrial Development Company, Air China Development Corporation (Hong Kong) Limited, Shanghai Air China Aviation Service Co., Ltd., Beijing Golden Phoenix Human Resource Co., Ltd. and Total Transform Group Limited.