没有固定的模式,一般的基本要求是:内容涵盖被派遣人的姓名,职务,派出事由,费用担保,回国担保,使用正规公司文件纸(抬头标明公司中英文名称地址电话传真等,最好还有logo),而后需要公司法人签名,盖公司公章.
如果是商务签证类的,还可以给你个基本的格式概念,希望对你有用.
用公司抬头的便签来制作.上面有你们公司的中英文名称,有地址,电话和传真.然后可以具体内容按下制作:
XX(国家)驻XX(北京,上海)总领事馆,
XX公司的介绍内容,可以含公司的规模啊,然后一些基本的信息介绍.比如说出口额啊,基本出口国家啊.公司规模,工人数量什么的.讲好听点就行.可以是一段或者两段,自己看内容!
XX公司为了进一步扩展市场,更好的保持与客户间的合作关系.洽谈并安排下一步的定单 (可以是出国的其他目的...),现受XX国家XX公司的邀请,决定指派以下人员:
姓名 性别 出生年月 护照号码
于XX年XX月XX日去往XX国家, 单次(或多次)往返,预计停留时间XX天. 此次出访费用将由XX公司支付!现特报请 XX (国家)驻上海(或北京)总领事馆,望能予以办理出国通行签证,批准出国为感!
然后法人签字盖章
公司盖章
样本1:
Dispatch Letter
This is to certify that Mr. (Ms.) is working in our organization. We agree to dispatch him (her) to visit your country to exchange on quality issues with the concerned organizations during Nov.27-Dec.3, 2003 at the cost of our organization.
Regards.
单位英文名称、单位印章
2003年11月11日
样本2:(印度签证)
派遣信(打印在本公司文头纸上，文头纸须包含本公司名称和地址，加盖公章)
Aug. 2, 2006
To: the Embassy of India in China
We hereby certify that Ms./Mr（根据性别选择） XXXX(姓名)，职务，is scheduling to leave Beijing for New Dehli on Sep. 8, 2006 on the purpose of attending MMMM 2006 Iin new Dehli. The duration of stay will be 12 days. All the expenses include air tickets, transportation, accommodation and medical insurance will be covered
She/He（根据性别选择） will come back on the schedule and still work in （单位名称） after the visit in India.
Sincerely yours,
Xxxxx(签发人姓名)
XXXX(职务)
（签字）
（日期和地点 英文）
样本3:(新西兰商务签证)
Certificate 日期
This is to certify that a delegation from 单位名称headed by 客人名字will visit 国家on 时间and will be there fordays.
The purpose of the visit is
The name list is as follows:
Name:
WorkingPlace:
Position:
During the period of one stay in New Zealand, all expenses including return air tickets, board and lodging as well as health insurance will be born by our company.
will come back to china on time.
Yours truly,
单位名称
派遣函样本4:
CERTIFICATE OF GUARANTEE
TO :the Embassy of (国家名) in Beijing或
the Consulate General of（国家名）in Guangzhou
Date:
Dear Sir or Madam:
As invited by (邀请单位名称), the delegation of XX people, headed by Mr.(Ms.)XX（姓名）, the manager (职务) of （工作单位名称）, will go to your country in XX (月份) to do sth.（详细的访问目的），the duration of their stay will be XX days. The name-list of the delegation is as follows:
Name Date & Place of Birth Service organization Title Working period Annual income
All costs including medical insurance occurred during this trip will be covered by XXX（费用承担方的单位名称）；and we guarantee that during this trip, they will obey laws of your country, and be back as scheduled. It will be grateful if you issue them visas as soon as possible!
Best Regards,
Sincerely yours,
----------------单位领导签名
汉语拼音（正楷打印）
注明职务
公司全称
加盖单位的公章
备注：1、本证明是送往外国驻华使领馆的正式公函，务求字迹清晰、打印工整；
2、须用本单位的正式的公函稿纸（如外办的稿纸，须注明中英文的单位名称、地址和电话号码）
样本5:
DISPATCH LETTER
At the invitation of 邀请单位（英文，写明哪个国家、地区的）, Mr. （Ms.）（名字，英文） ，职务（英文）, from 所在单位全称（英文）,, will visit 访问的国家或地区（英文） for/to 访问目的（英文），on出发日期（英文，比如May.20,2004）, the visit will last for 访问时间（英文，比如 15 days）.
We shall pay all the relative expenses for his(her、their) visit to 访问的国家或地区（英文） including international tickets, accommodation and insurance.
No. /Name /Sex /Position/Date of Birth /Place of Birth/ Passport Number .
单位英文名称并加盖单位公章
XXXX年XX月XX日
单位地址：
单位电话： 单位传真：
