MTR Corporation Limited is an operator of railway system with six segments. Hong Kong transport operations provides passenger operation and related services on the urban mass transit railway system in Hong Kong. Hong Kong station commercial business includes the letting of advertising, retail and car parking space at railway stations, the provision of telecommunication and bandwidth services in railway premises in Hong Kong. Hong Kong property rental and management businesses includes the letting of retail, office and car parking space and the provision of estate management services in Hong Kong. Hong Kong property developments business includes property development activities at locations near the railway systems in Hong Kong. Other businesses include businesses not directly relating to transport operations or properties. Mainland of China and international subsidiaries business include the operation and maintenance of mass transit railway systems.