Object: Electronic Auction - The Object Of The Bidding Is The Price Registration For Future And Eventual Provision Of Common Engineering Services, For Preventive And Corrective Maintenance Of Physical Building Installations And Public Equipment, With The Supply Of Labor, Materials And Replacement Parts, For A Percentage Discount On The Unit Prices Of The Seinfra 28 And 28.1 Service Tables To Meet The Needs Of The State Public Administration Bodies And Entities Of The Ceará