Dear XXX, (to the addressee)
Good day. (greetings)
XXXX (text)
Best greetings (common greetings at the end)
XXX (year, month and day)
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XXX (sender)
location
company
telephone
Fill in the sender's date on the horizontal line and sign under the horizontal line. Signature is some detailed information of the sender, such as telephone number, address, etc.