37 Building construction consultancy services; Building construction supervision services for building projects; Building construction, remodeling and repair; Cable laying services; Construction of telecommunication towers; Construction project management services in the field of electric charging station design, development and installation; Construction project management services in the field of telecommunication towers, telecommunication infrastructure and telecommunication networks; Construction services, namely, planning, laying out and custom construction of commercial buildings; Installation and repair of telecommunication apparatus; Installation of heating, ventilation and air-conditioning systems; Installation, maintenance and repair of Ethernet and wireless networking hardware; Maintenance of telecommunications apparatus; Maintenance of heating, ventilation, and air-conditioning systems, plumbing systems and electrical systems; Real estate site selection; Repair or maintenance of power generators