Tender for Borhation of postman services derived by grainberk, healthy. In addition, all complementary activities, additional or specific services that require the evolution of received warnings and, if appropriate, of the certificationd cards or own send letters, when it cannot perform delivery of the person destined. Postal services generated by the collected, repository, admission, course, transport, distribution, and delivery of postmissions or reception warnings, according to the specifications that are detailed in the full of technical advertising. A complementing the purpose of the contract is to favor environmental sustainability.