What is the writing format of the invitation?

An invitation letter generally consists of a title, a title, a body, a conclusion and a signature.

(1) title. Write "invitation letter" in the middle of the first line.

(2) address. Write the name of the invited company or the name of the invited person in the top box, and add a colon after the address.

(3) the text. Explain the time, place, content and related matters of the activity. If the invitee is allowed to speak at the meeting, it should be indicated in the invitation letter so as to make preparations.

(4) the end. Write some polite expressions.

(5) signature. Name of unit or individual. Write the year, month and day of the letter in the lower right corner of the signature.