Electrical installations (AT-BT), gas installation and repair, Category 2 oil installations, installation and maintenance of thermal installations in buildings, installation and maintenance of industrial cold, installations and maintenance of fire protection systems, detection systems and alarm, water supply, hydrants, fire extinguishers, fire hydrants, dry column, automatic sprinkler and water spray extinguishing fixtures, extinguishing, water mist extinguishing fixtures, physical foam extinguishing, powder extinguishing, fire control smoke and heat and luminescent signaling, voice and data