Air China Limited, together with its subsidiaries, provides air passenger, air cargo, and airline-related services in Mainland China, Hong Kong, Macau, Taiwan, Europe, North America, Japan, Korea, the Asia Pacific, and internationally. The company operates through Airline Operations and Other Operations segments. It provides aircraft engineering and airport ground handling services. The company is also involved in the import and export trading activities; and provision of cabin, airline catering, air ticketing, human resources, aircraft overhaul and maintenance, and financial services. As of December 31, 2021, it owned and operated 746 passenger aircraft, including business jets. The company was founded in 1988 and is based in Beijing, the People's Republic of China. Air China Limited is a subsidiary of China National Aviation Holding Corporation Limited.