商务签证邀请函的英文模板通常包含以下要素：
称呼：
尊敬的签证官或大使馆工作人员。
邀请目的：
邀请某人访问公司或参加某个活动。
被邀请人信息：
包括全名、性别、出生日期、护照号码等。
邀请详情：
包括访问的日期、时间、地点、目的以及行程安排。
费用承担：
明确指出邀请方将承担的费用，如往返机票、住宿、交通、保险等。
期望的回应：
表达期待对方访问或回应的意愿。
结束语：
此致敬礼或最诚挚的问候。
```
Dear Sir/Madam,
We are pleased to extend an invitation to Mr. [Full Name], with Passport No. [Passport Number], born on [Date of Birth], to visit our company for business purposes. The visit is scheduled for [Date of Visit] from [Start Date] to [End Date] at our office located at [Company Address].
During his stay, Mr. [Full Name] will be engaged in [Purpose of Visit], which includes [Specific Activities or Meetings]. We will cover all expenses related to his travel and stay, including international airfare, local transportation, accommodation, meals, and any necessary medical insurance.
Please find attached the detailed itinerary for his visit. We look forward to his visit and the opportunity to discuss potential business opportunities with him.
Thank you for your attention to this matter. We await your response at your earliest convenience.
Sincerely,
[Your Name]
[Your Position]
[Your Company Name]
[Contact Information]
```
请根据实际情况调整上述模板中的内容，以确保邀请函符合具体要求。