日期:2011-01-19 10:10
你們提供的所有資料都嚴加保密，你們不負有任何責任。
謝謝。
CREDIT INVESTIGATION
Dear Sirs，
You are kindly requested to provide us with the information on credit and business operation of Import Company. The company address is .Please be convinced that all the materials you supply to us will be kept absolutely secret, for which You will not take any responsibilities.
Best Regards.
Yours truly
三、商業(yè)英文書信中所使用的詞語
（1） 貴函
Your letter; Your favor; your esteemed letter; Yo