New offer letter addressing that company's address has been changed?

Hello All, Could you please tell me how to make new appointment letter, my company recently got change its address and know we have to give new offer letter addressing that company's address has been changed, however terms and conditions would be same.
Please help me

Dear Anamika,Consequent to change/Shifting of Office, does not warrant issue of "New Appointment Letter" What do you mean by "New Offer Letter" Please frame your question with proper application of mind