Short resignation letter

leadership:
Hello!
I am grateful to the company for caring and caring for me over the years. Since I came to xx company in the year of 2000x, I have learned a lot. In the future, no matter where I go or what I am doing, this experience is a valuable asset. Netcom's experience in this work is proud.
Now, due to personal reasons, he is resigned and hopes to be approved by the leadership.