The call for tenders is based on the ppp model or, at that time, when the government does not have enough money and manpower, the government or another authority issues a call for tenders and, for the assumption of this work, different contractors submit their own tariffs to the government or public authority and which has a lower price rate, that this contractor has implemented this offer and that it can respond to this offer a but for the execution of works have signed certain contracts and that conditions like you have to complete the work within a certain period of time, certain qualities and deposits of money like EMD, SD, etc. and that these conditions are the contractual documents. It is a post and auction document. This document is in complete agreement. Once the offer is completed, the contractor and the client will enter into an agreement for the project to be concluded within the stipulated time frame with the same specification and working procedure as mentioned in the tender document. . . .