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