gǎn / xiè / nín / duō / nián / lái / duì / wǒ / men / de / hòu / yì / wǒ / men / yì / zhí / míng / jì / zài / xīn

感谢您多年来对我们的厚谊，我们一直铭记在心。

Thank you for your generous friendship over the years; we will always remember it.