Bids Are Invited For Hiring A Company Specialized In The Field Of Engineering, To Carry Out The Supply And Installation Of Aerial Energy Substations In Units Connected To Seduce, Whose Established Activity, Exclusive To The Profession Of Electrical Engineer, Implies Intervention In The Environment Through A Set Of Actions That Lead To The Improvement Of Public Equipment, Aiming At Air Conditioning The Building, In The Interest Of The Administration, As Expressly Requested By The Department Of Education, Culture And Sport Of Petrolina.