Object: Electronic Auction - Continuous Supply Of Acetylene, Nitrogen And Oxygen Gases And Welding Mixture (Argon/Carbon Dioxide), Stored In Cylinders, Provided On A Lending Basis, With Delivery In Installments To Brt System Garages, For A Period Of 12 (Twelve) Months, In Accordance With The Specifications Contained In This Notice And/Or The Terms Of Reference.