Foreign trade conditions usually follow the terms of contracts signed by buyer and seller and comply with some international regulations and terms. These conditions are exposed to successive changes and transformations, and these changes should always be addressed. Knowing the international terms and its essentials in contracts has benefits, including (with-inco)1- contracting parties are aware of their duties and responsibilities in conducting business transactions.2- The implementation of the transactional and its implementation of the transactional ceremonial disputes between the buyer and seller who are often unaware of the terms of transactional and taste in terms of a standard trade. The important point in the conclusion of international contracts and the compliance of the terms is that, first, the parties of the contracts are typically necessary when using relevant terms, and even the abolition of the general terms that have multiple concepts, and instead use clear and precise words and terms, and secondly, given the precise determination of the tasks of the parties in contracts is not possible, so when the contracts are even applicable to the terms of the customs of the previous parties. Benefiance of Article 1980 of the United Nations Convention is constantly changing international trade terms according to the scope of international trade operations and the number of different merchants and regulations of their location and business, so in the use of terms and conditions in contracts and correspondence, the latest concepts must be understood and respected. In this book, the readers will be able to make the most of these.