Bangkok Expressway and Metro Public Company Limited 

Bangkok Expressway and Metro Public Company Limited, together with its subsidiaries, engages in the construction and management of expressways and rail mass rapid transit system projects in Thailand. The company operates through four segments: Expressway Business, Rail Business, Commercial Development Business, and Others. It undertakes commercial developments relating to the expressway and operates metro services. The company also operates and manages the Si Rat Expressway, the Si Rat - Outer Ring Road Expressway, and the Udon Ratthaya Expressway, as well as the MRT Blue Line and MRT Chalong Ratchadham Line projects. In addition, it engages in the rental of retail space, and provision of advertising services, as well as offers telecommunication services for underground train stations and on expressways. Bangkok Expressway and Metro Public Company Limited was founded in 1998 and is headquartered in Bangkok, Thailand.