Object: Electronic Auction - Price Registration For Future And Eventual, Acquisition In Installments, Of Various Parts For The Maintenance Of Heavy Tractors And Machines, Intended For The City Hall Of Francisco Santos Pi, A Pre -Trading Mode, In Its Electronic Form, Price Registration System (Srp), Of The Lower Price Per Group, In The Quantities, Conditions And Specifications Contained To Be Established In The Term Of Reference Ii Of The Public Notice.