解析：
Dear Mr.Zhang,
We would like to invite you to visit our factory from November 15 to November 20 and give you an overview of our facilities and production methods.This would also be an opportunity for you to visit our Head Office in Los Angeles to meet our design team and Marketing and Sales Directors to discuss areas ofcommon interest.All the expenses will be assumed by us,for you are our guest.We can also put a company car and a driver at your disposal during your stay here.I do hope your schedule will allow you to accept our invitation.I look forward to meeting you here.
Yours sincerely,
Li Ming
