请问英文达人，这两句英文怎么翻译？

We should handle China invitation letter for you, may I ask which city you apply for a visa?

We are going to send you an invitation letter. Please tell us which city you apply for a visa.

We are planning to handle the invitation to China for you. May I know which city you are visaed?

We will transact your come to China's invit letter,quaere you transact the visa in which courtry?