Electronic Auction - Future And Possible Hiring Of A Specialized Company For The Supply Of Lpg Liquefied Petroleum Gas, Packaged In 45Kg Bottles, To Supply School Units, The Headquarters Of The Education Department, Apae And Cnec Affiliated Units, In Response To Demand From Municipal Secretary Of Education Of This Municipality, Through The Price Registration System, According To The Conditions, Quantities And Requirements Established In This Public Notice And Its Annexes. (EXPIRED)