Dear employer
My name is Belal Hossain Raz. For the last 4 years I have been working on a factory with the same duties as you described. I sure that my experience can be beneficial for your company. I am very carefully make a decision to choose a new company, so I will have some questions if you decide to hire me. I am definitely OK to work in timezone which you prefer. It would be pleasure for me to contact you, sir.
Best wishes.