WHO WE ARE SERVICES PARTNERS CERTIFICATIONS REFERENCES OUR OFFICES CONTACTS who we are Gruber srl was founded in 1967 as an individual company founded by Lorenzo Gruber, specialized in civil electrical systems. In the same year he began his collaboration with the Ferrara-based company Baltur for which he became a concessionaire in 1975, thus specializing in the construction of electrical systems for thermal power plants and management of room temperatures. In the Eighties, with the advent of methane gas, to follow the needs of the market with ever greater attention and professionalism, the company expanded and in 1993 became a company. In 1995 he obtained the UNI EN ISO 9002 certification for maintenance of heating systems and related electrical installation. In 2001 it acquired the UNI EN ISO 9001: 2000 certification for operation and maintenance of heating and air conditioning systems and related electrical installation, an expression of competence and professionalism. The Gruber company is one of the founding companies of the Consorzio Bruciatoristi Trentini, today Consorzio Prometeo, and of the company Trentina Calore srl. Gruber srl in 2007 acquired the company Tomasi Ettore of Trento to guarantee a better service to its customers in the provincial territory. Today Gruber Srl deals with air conditioning and alternative energies, alongside heating systems with air conditioning systems, solar panels and geothermal energy. Furthermore, it has been using remote management and remote assistance for years, guaranteeing its customers a continuous service (24 hours a day, 365 days a year). Gruber srl is the ideal partner for installers both during the construction of the systems (electrical parts) and in the subsequent maintenance phases. headquarters in Riva del Garda Trento office UNI EN ISO 9001: 2008 operation and maintenance of heating and air conditioning systems and related electrical installation (excluding design). Gruber srl with sole shareholder VAT number 01850370220 Sede: Via Monte Misone 21, 38066 Zona Baltera Centro Archimede, Riva del Garda (TN) Tel 0464 516948 - Fax 0464 517227 info@grubersrl.it Filiale: Via Maccani 34 - 38100 Trento Tel 0461 823235 - Fax 0461 421546 infotrento@grubersrl.it

WHO WE ARE SERVICES PARTNERS CERTIFICATIONS REFERENCES OUR OFFICES CONTACTS agent and dealer for Trentino Arco authorized service center for: used technologies: Trento authorized service center for: headquarters in Riva del Garda Trento office UNI EN ISO 9001: 2008 operation and maintenance of heating and air conditioning systems and related electrical installation (excluding design). partner: Gruber srl with sole shareholder VAT number 01850370220 Headquarters: Via Monte Misone 21, 38066 Zona Baltera Centro Archimede, Riva del Garda (TN) Tel 0464 516948 - Fax 0464 517227 info@grubersrl.it Filiale: Via Maccani 34 - 38100 Trento Tel 0461 823235 - Fax 0461 421546 infotrento@grubersrl.it