The act of "Presentation of Envelopes N ° 2 and N ° 3, and Opening of Envelope N ° 2" was carried out. In that act, proposals were presented by Consorcio Hidrovías II, made up of Sinohydro Corporation Ltd (China) and Construcción y Administración S.A. (Peru), China Communications Construction Company Ltd - CCCC (China), and Jan De Nul NV (Belgium)