3- General supplies, general, integrated and specialized contracting and contracting of electromechanical works - supplying and installing electronic devices for installations from inside only (surveillance cameras - alarms - electronic gates) mobile maintenance of the above - supply and installation of supplies and devices for solar energy And electrical supplies and equipment, supply of warehouses and car garages, supply and installation of water and sanitation networks, cooling and air conditioning equipment, computer networks and security systems for buildings and facilities.