Hiring For The Execution Of The Work: Improvement And Expansion Of The Potable Water And Rural Basic System Of The C.P. Buenos Aires Of The District Of Rio Negro ¿Province Of Satipo ¿Department Of Junín¿ With Cui N ° 2525452. - Contracting For The Execution Of The Work: "Improvement And Expansion Of The Drinking Water System And Rural Basic Sanitation Of The C.P. Buenos Aires Of The District Of Rio Negro - Province Of Satipo - Department Of Junín" With Cui No. 2525452.