【Abstract】High quality of correspondence can promote the mutual understanding in business when achieving the expectation of communication and hence to make a deal effectively. This paper， combined with the author’s personal working experience， sheds light on that a successful foreign trade English correspondence should be comprised of eight strategies with a newly discovered writing principle .
　　【Key words】foreign trade English correspondence; writing strategies; creditability
　　【作者簡介】罗芷扬，林旭涛（通讯作者），广东技术师范大学。

1. Introduction

　　With the development of global trade， foreign trade English correspondence is becoming a fast and efficient way to express the information of demand between buyers and sellers. Broadly speaking， there are eight writing strategies in foreign trade English correspondence， the first seven of them have been thoroughly described in present literatures， and the last one， creditability， was derived from my experience when working in a foreign trade company. Through the research， I discovered the remarkable significance of writing credible business letters.

2. The 8C writing strategies in foreign trade English correspondence

　　Conventionally， the seven commonly acknowledged writing strategies in foreign trade English correspondence are Courtesy， Clarity， Correctness， Completeness， Concreteness， Conciseness and Consideration. In addition， we should add the eighth strategy， Credibility， to increase the trustiness of correspondence so that the integrality of writing strategies can be achieved.
　　Courtesy is of great importance when writing a business letter. In this strategy， words selected cannot be rude or annoying. We should polish our words to make them persuasive so that customers may feel comfortable and trustful in what you said.