I used the following based on tips from this webpage:
LETTER HEAD
Taipei Economic and Cultural Office
555 Montgomery St #501
San Francisco, CA 94111
UNITED STATES OF AMERICA
+1 (415) 362-7680
Letter of Invitation for _________: Passport No:______
Dear Sir/Madam
I am writing this letter to support the visitor visa application for _______. He resides in the United States, and is my business associate and colleague. _____ lives at [Visitor’s Address] and his home phone number is (YYY) XXX-XXXX.
I am a legal permanent resident of Taiwan, and I live at _________. I work at ____. I would like _____ to visit me from [Date of Entry] to [Date of Exit] so we can __________.
I request that he is granted a visa for this whole period, in which time I would be fully responsible for his well being. ______ will stay at my home, and following the expiration of his visa, I will ensure that he returns to the US.
Kindly find attached, all necessary documentation required. Thank you in anticipation of your favorable response
Sincerely,
______________
ARC Number ______
TITLE
COMPANY
ADDRESS
統一發票
COMPANY PHONE
MOBILE PHONE
ATTACHED
- Photocopy of Alien Resident Certificate
- Proposed Itinerary of ______'s stay in Taiwan (a table of dates + several cities)