Ccontratacion Of The Qualified Labor Service For The Manufacture, Installation And Assembly Of Metallic Structure With Andean Tile Coverage, Aluzinc, Polycarbonate, Accessories And Painted According To Reference Terms, For The Improvement Project - Contracting Of The Qualified Labor Service For The Manufacture, Installation And Assembly Of Metallic Structure With Coverage Of Andean Tile, Aluzinc According To Reference Terms, For The Project Improvement And Expansion Of The Nive Educational Service