Risen in 1964, the Gmd El. builds electronic instruments for civil and industrial use. The firm is direct by the doctor physical Luigi Mariotti, that originates from the Superior institute of the Mails and the Telecommunications in Rome, where he has developed assignments of Technical direction and search in the sector of the plants of energy and what member CEI (Committee Elettrotecnico Italiano). Currently it is member FITCE (Federation Engineers in telecommunications of the European Community).