Installation, maintenance and repair of wireless networks, installation of computer networks, installation of radiofrequency communication systems, consultation in the field of physical maintenance of vehicles, information on the maintenance of equipment, installation and repair of business and office machinery and equipment, installation and repair of computer hardware, installation of electronic and digital connection to a call center, installation of security system, installation of theft prevention devices, installation, maintenance and repair of shopping carts, vehicle maintenance consultation, vehicle repair and maintenance, maintenance of alarm systems, maintenance and repair of telecommunications networks, apparatus, and instruments, maintenance, installation and repair of computer networks, office machines and office equipment, antenna installation and repair, building inspection, and building maintenance and repair