一、dear sir/madam:

　　i"m delighted you have accepted our
invitation to speak at the conference
in [city] on [date].

　　as we agreed, youll be speaking on
the topic "" from [time] to [time]. there
will be an additional minutes for questions.
would you please tell me what kind of
audio-visual equipment youll need. if you
could let me know your specific requirements
by [date], ill have plenty of time to make
sure that the hotel provides you with what
you need.

　　thank you again for agreeing to speak.
i look forward to hearing from you.

　　sincerely yours,

　　[name]

　　[title]

　　二、dear sir/madam:

thank you for your letter of [date].

　　im glad that you are also going to [place]
next month. it would be a great pleasure
to meet you at the [exhibition/trade fair].
our company is having a reception at
[hotel] on the evening of [date] and i would
be very pleased if you could attend.
i look forward to hearing from you
soon.

　　yours sincerely,

　　[name]

　　[title]

　　三、dear sir/madam:

　　[organization] would very much like
to have someone from your company speak
at our conference on [topic].

　　as you may be aware, the mission of
our association is to promote . many of
our members are interested in the

　　achievements your company has made in .
enclosed is our preliminary schedule for
the conference which will be reviewed in
weeks. ill call you [date] to see who from
your company would be willing to speak to
us. i can assure you that well make everything convenient to the speaker.

　　sincerely yours,

　　[name]

　　[title]

　　四、dear sir/madam:

　　we would like to invite you to an
exclusive presentation of our new [product].
the presentation will take place at
[location], at [time] on [date]. there will
also be a reception at [time]. we hope you
and your colleagues will be able to attend.
[company] is a leading producer
 

　　(被邀请人) tom hanks （地址） xxxx él. : 33- fax : 33(0)
e-mail :tomhanks@-10-16dear mr. hanks,in reference to the visit of to china and meeting with madame xx. we would be extremely honored if you accept our invitation to visit us in china at your convenient time in order to share and follow the accept, sir, the expression of our best greetings. for any help and information you needed, please feel free to call xxof our team, his telephone number is 0086-xxx and emailistuow12@. suzan wang general manager
xxx. co.,ltd.

　　这是我给一个法国客户的邀请函，需要打印在有公司名称，地址，电话，logo等信息的正规信笺上，邀请人签名就行，如果访问时间确认，需要表明dated from ...... to .....,以便申请商务签证。