英文的邀请函格式怎么样？

Dear, We hereby sincerely invite you and your company representatives to visit our booth at The Canton Fair Center from Oct 31th to Nov 4th 20xx. We’re one of the manufacturers specialized in men's PU and Leather shoes, including sandals & leisure shoes and children's shoes. Our products are both in high quality and reasonable price.
It would be a great pleasure to meet you at the exhibition. We expect to establish long-term business relations with your company in future. Welcome to our booth:
Exhibition Center: The Pazhou Exhibition Center Booth Number: 10. 1 I35-36, J13-14
Date: Oct 31th to Nov 4th 20xx
We are looking forward to your coming!
Sincerely Yours, Jeff

英文的邀请函格式怎么样？

Dear SirMadam,
I,XX, residing at add:XXXXXXX, would like to invite my sister(XXX), residing at add:XXXXXX, China P R, to visit me in Italy for about three months starting from 20 October.
The purpose of the visit is for tourism within Italy. During their visit, they will stay with me at the above address and I will be reonsible for all their expenses including the round trip air fare to Italy, food, housing, travelling within Italy, insurance and all other expenses.
I will make sure that my sister will leave Italy before the expiration of their authorized stay. Please kindly grant them Temporary Resident Visas.
Please do not hesitate to contact me via telephone at XXXX-XXX or E-mail me at XXXX@hotmailif you have any questions.
Best regards

英文的邀请函格式怎么样？

Dear Ruth,
Next Friday, September the fifth, is Tom’s birthday. I thought it would be pleasant to have some of his friends here to help him celebrate. Will you come We’ll have dancing from nine until midnight, and then cut the birthday cake! Both Tom and I are very eager to have you here, so don’t disappoint us! Affectionately yours,
Li Hua August
3.1,

英文的邀请函格式怎么样？

致：公司
尊敬的___先生∕女士，您好!感谢百忙之中阅读此邀请函。仰首是春，俯首成秋!XXXX公司迎来了首次周年庆，在这成长的一年里承蒙贵公司一直以来的鼎力支持，我公司的业绩才能蒸蒸日上。为此，特向贵公司同仁致以真诚的感谢!
借此次周年庆，为表达对您的诚挚谢意，在全体同仁共同联欢的同时也诚邀您参与我们的周年庆，分享我们的快乐!活动相关安排如下：活动时间：XX年XX月XX日中午12：00点开始。地点：
本次活动我们准备了丰盛的午宴和精彩的节目与君共享，还安排了一系列抽奖环节，大奖连连机会不容错过。让我们欢聚一堂，共同欣赏全体同仁精心编排的精彩节目，一起品尝美酒，共话未来。活动的筹办如能得到您的`鼎立赞助，将会更加精彩，热情期待您的参与，望贵公司能一如既往的支持我司，与我们架起一座坚固的合作桥梁! 承蒙赞助，不胜感激!再次感谢您的支持与信赖，期待我们在合作中互惠双赢，共同发展!