Analogue Holdings Limited provides electrical and mechanical (E&M) engineering services to public and private sectors in Hong Kong, Mainland China, Macau, the United States, the United Kingdom, and internationally. It operates through four segments: Building Services; Environmental Engineering; Information, Communications and Building Technology (ICBT); and Lifts & Escalators. The Building Services segment offers electrical and mechanical engineering building services, including the design, installation, testing and commissioning, and maintenance of heating, ventilation, and air-conditioning system; fire service system; plumbing and drainage system; and electrical and extra low voltage (ELV) system. The Environmental Engineering segment is involved in the design, construction, operation, and maintenance of environmental engineering systems for the treatment of sewage, water, solid waste, sludge, and gas. The ICBT segment engages in the design, installation, and servicing of a range of intelligent systems, information and communications (ICT) systems, and building technology systems. The Lifts & Escalators segment designs, supplies, installs, repairs, and maintains a range lifts and escalators under the Anlev Elex name. The company also supplies electrical and mechanical materials and equipment; provides data center and critical facilities infrastructure support services; manufactures and sells hardware, software, and electronic systems; develops, produces, and markets automated movement systems; installs, maintains, and services travellators; manufactures, designs, and sells moving walkways; and provides property management services. The company was founded in 1977 and is headquartered in Kwai Chung, Hong Kong. Analogue Holdings Limited is a subsidiary of Arling Investment Limited.