Air China Limited, together with its subsidiaries, provides air passenger, air cargo, and airline-related services in Mainland China, Hong Kong, Macau, Taiwan, China, and internationally. The company operates in 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. Air China Limited was founded in 1988 and is headquartered in Beijing, the People's Republic of China.