申请外国专家来华邀请函的条件和流程是什么？

外国专家来华停留不超过90天的，符合外国高端人才（A类）或国家相关规定的，才能申请外国专家来华邀请函，并为其办理在华停留时间不超过90天（含）的F字证；外国专家来华停留时间超过90天的，均视为工作，须按照外国专家来华工作的规定办理签证和居留手续。

Foreign experts who stay in China for no more than 90 days, also meet the requirements of foreign high-end talents (Class A) or relevant national regulations can apply for an invitation letter for foreign experts to come to China and apply for a F certificate for them who stay in China for no more than 90 days (inclusive); Foreign experts who stay in China for more than 90 days are deemed to be working and must go through visa and residence procedures in accordance with the provisions of foreign experts working in China.

外国专家来华邀请函需要在外国人综合服务平台上提出申请，并上传以下材料：

1. 外国专家来华邀请函申请表（在线填写打印，申请人签字后，加盖用人单位公章，再上传至系统）

2. 工作合同、项目合同（包括申请人姓名、国籍、工作地点、工作期限、工作内容，并列明所有工作地点和入境次数）

3. 申请人护照或国际旅行证件（信息页）

4. 其他（符合外国高端人才（A类）的证明材料）

The invitation letter of foreign experts to China needs to be submitted on Foreigner Integrated Service Management Platform, and the following materials should be uploaded:

1. Application form for invitation letter of foreign experts (fill in and print online, sign by the applicant, affix the official seal of the employer, and then upload it to the system)

2. Work contract and project contract (including the applicant's name, nationality, work place, work period, work content, and all work places and times of entry)

3. Applicant's passport or international travel document (information page)

4. Others (certification materials conforming to foreign high-end talents (Class A))