Asia Allied Infrastructure Holdings Ltd. is an investment company, which engages in civil engineering, electrical and mechanical engineering, foundation and building construction work, property development and assets leasing, professional services, and other activities. It operates through the following segments: Construction Services, Property Development & Asset Leasing, Professional Services, Non-Franchised Bus Services, and Medical Technology and Healthcare. The Construction Work segment offers services in civil engineering, electrical and mechanical engineering, foundation, and building construction. The Property Development and Investment segment focuses on the development and sale of properties and leasing of assets. The Professional Services segment is involved in security and facility management solutions. The Medical Technology and Healthcare segment caters production and sale of PET radiopharmaceuticals for medical use in Hong Kong. The Non-Franchised Bus Services segment provides non-franchised bus services. The company was founded in 1968 and is headquartered in Hong Kong.