What documents or stationery should I bring to the interview?

You'd better bring a bag for the interview, not too fancy.

The most basic things are a resume and a pen. Resume, it is best to bring about three copies, not many.

Because there may be about three people interviewing you, maybe HR only prepares a resume for the main interviewer, and then you send it on your own initiative. Can give a comprehensive impression of doing things.

Needless to say, pens are usually tested or registered in interviews.

If the recruiter doesn't ask for anything else, don't bring it.