国际工程是跨国的经济活动,因而国际工程信函的书写相比国内较复杂。在国际项目实施过程中,相比于其他类型的文件,信函的数量是最多的,而且在项目合同管理中占有非常重要的地位。国际工程中使用的信函通常都是正式的书面信函;而且信函书写工作贯穿于整个工程项目实施过程中。 International engineering is a transnational economic activity, so the writing of international engineering letters is more complicated than that in China. In the process of implementing international projects, the number of correspondences is the largest compared with other types of documents and occupies a very important position in project contract management. The letters used in international engineering are usually formal written correspondence; and the writing of letters runs through the implementation of the entire project.