I don't know the rules for collecting logo. ...

Isn't this the condition and requirement put forward by a recruiter?

Specifically, a person or unit may collect the logo of its own unit or company as a legal person, which may be paid or unpaid. Since there is a solicitation, there is of course an application, so the recruiter puts forward the conditions for the applicant: first, the mailing address, work unit and so on. Second, if you apply, of course, you should finish the application and print a copy in black and white on A4 paper. Third, he wants not only paper works, but also electronic works, that is, to save a copy of the works made by your computer on CD or USB flash drive, and the files should be in JPG format or vector format. The so-called vector format, of course, you have to use vector software to do this work, and the resolution is not less than 300DPI.