SUNeVision Holdings Ltd., an investment holding company, provides data centre and information technology (IT) facility services in Hong Kong. It operates through Data Centre and IT Facilities; and Extra Low Voltage (ELV) and IT systems segments. It offers data centre and IT facilities colocation services to allow customers to house their IT infrastructure or equipment; interconnection services to provide customers with interconnectivity; and other managed services. The company also engages in the design, installation, operation, laying, and cabling of extra-low voltage and IT systems, as well as building access, voice, data, power supply systems and network, and other infrastructure networks; and provision of related repair and maintenance services.