一般来说,国际条约和协定必须是由两个或两个以上的主权国家就彼此间经济、政治、文化等领域的关系,为确定各方应履行的权利和义务而缔结的书面协议。按照缔约国的多少,条约和协定可分为双边条约和协定、多边条约和协定。 双边及多边贸易条约和协定是国际性条约和协定的一种。双边贸易条约和协定,是指两个主权国家之间所缔结的贸易条约和协定。多边贸易条约和协定,是指两个以上主权国家共同缔结的贸易条约和协定。就贸易条约和协定的内容结构来看,它一般由序言、正文和结尾三个部分组成。序言通常载明各缔约方发展贸易关系的愿望及缔结条约和 Generally speaking, international treaties and agreements must be written agreements concluded by two or more sovereign nations in their economic, political, cultural and other fields and in determining the rights and obligations to be fulfilled by all parties. Depending on the number of Contracting States, treaties and agreements can be divided into bilateral treaties and agreements, multilateral treaties and agreements. Bilateral and multilateral trade treaties and agreements are one of the international treaties and agreements. Bilateral trade treaties and agreements refer to trade treaties and agreements concluded between two sovereign nations. Multilateral trade treaties and agreements refer to trade treaties and agreements concluded by more than two sovereign nations. In terms of the content structure of trade treaties and agreements, it generally consists of three parts: the preamble, the text and the end. The preamble usually contains the parties’ desire to develop trade relations and the conclusion of treaties and