u/BeginningFox137

I need help in translating, it's just a few words. I'm planning to give my Chinese friend art as a gift. I want to put a few words in his native language. Of course, I could use Google Translate or any other translator, but Chinese is completely foreign to me, and I couldn't even tell if the words were translated correctly or if I was getting a Dim Sum recipe. The words are "Thank you, for all these years, for all your hard work!"
Regards.