原文：
Dear Mr. Chen,
I have filled out the questionnaire.
We're very satisfied with your after-sales service. However, though its high configuration and favorable price satisfy me, I should point out that the computer system is always halted and it suddenly has the condition of black screen of death. We would benefit greatly from it if you could update it technology.
Faithfully yours,
Zhao Feng
译文：
尊敬的陈先生：
我已经填写的调查问卷。
我们对您的售后服务非常满意，但是，我必须指出，虽然电脑配置好、价格优惠，但是电脑有时死机，有时还会突然出现黑屏的情况。如果你们能够改进这方面的技术，我们亦会受益不尽。
赵锋
谨上
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