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Aemifesa founded in 1956 is a Guild of professionals in the sector of fluid and energy installations: Water, Gas, Electricity, Air conditioning, Telecommunications with nearly 400 companies affiliated between Autonomous and Societies of the territory of the North of Barcelona and Baix Maresme, located in a building of 3,000m2 of new construction called CATT Gremi where there is the trade union school and a nursery of business companies linked solely to the sector.

The Gremi is a non-profit organization that takes care of the installers' good praxis, advises, seeks services, seeks agreements and imparts training in their own school to guarantee a sustainable quality in the sector, this is where it has developed in The last decade is a genuine conviction of sustainability with the construction of its headquarters with the latest renewable innovations, all implemented by a pedagogical and formative operation with constant connection to the regulation that regulates it and what the Society needs at all times.