Dear Mr. Miller,
I am writing to you about a big plan.
I'm the supervisor of the research and development department, in order to improve my professional skill and offer better sevice for company. I think I need to learn more about current international cutting-edge technology. I hereby advance an application for further studies abroad.
I promise to study hard and come back to contribute more to company's prosperious future. Your decision may affact company's future. Please consider carefully.
Hoping for your support.
Sincerely yours.
Betty