Is the campus recruitment conducted by enterprises open to wearing daily suits? Will there be an on-site interview? Thank you for your warm answers.

There is nothing wrong with you wearing formal clothes in any enterprise, such as real estate, but it is not mandatory for some engineering students to wear them, but it is very important for you to dress neatly and appropriately and give others a good first impression. As for the on-site interview, he may just chat with you. Generally, he will delete his resume and select a certain number of people before formally notifying the shortlist, and then there will be a formal written interview.