汉译英：谢谢您长期以来的帮助。

感谢您长期以来的帮助.REM-700的机器我们已经给客户安装了,机器非常好.客户也非常满意.但是机器上缺少一个Vinyl cover.请问您是否能够帮我们再寄一个。谢谢。
Thank you for your all-along support. We've installed the machine REM-700 for our customer. It is very good and much to our customer's satisfaction. But a vinyl cover for the machine is missed .Would you kindly help to send us one? Thank you.

质量保证！

We appreciate much for your long-time support.We installed the machine REM-700 for our customer.It was good and our customer is satisfied too.But there is a vinyl cover missing.Would you kindly help to send one to us?