The Nda (Non Disclosure Agreement) is a confidentiality agreement by which two or more parties undertake not to disclose certain information in order to limit the risks associated with future business relations. The parties undertake to use the information received only for authorized purposes. Any non-disclosure agreement may be adapted to the needs of the parties: the duration may provide for a fixed period or be fixed indefinitely. Agreements without delay usually contain non-patentable information, customer lists or sensitive information the disclosure of which would be prejudicial to one of the parties to the contract. Predicting a second language can then be important to be sure that there is no misunderstanding about the content of the agreement (a Chinese side cannot rely on the fact that it has not understood the importance of a pact in English, even if a version is available in Chinese). . . .