Macau E&M Holding Limited, an investment holding company, provides electrical and mechanical (E&M) engineering works, and maintenance and repair services in Macau. The company engages in the supply and installation of low voltage systems; heating, ventilation, and air-conditioning systems; extra low voltage system works; related testing and commissioning services; and management and monitoring of quality and delivery of E&M engineering services works. It also offers repair and maintenance services for property and hospitality facilities comprising hotels and entertainment resorts. Macau E&M Holding Limited was founded in 2011 and is headquartered in Macau.