The recruitment company can learn about your past work experience, thoughts and personal basic information from your resume. It helps to shorten the interview time and also reduces some introduction links.
Some recruiters in the talent market (because there are many interviewers, they can't all interview on the spot for time reasons) will collect the resumes of candidates first, and then inform the interview if they are interested.
To sum up, you should prepare more resumes when looking for a job in the talent market. For interested companies, you can submit more resumes to increase the chances of successful interviews.
Resume is a brief introduction sent by job seekers to the recruiting unit. Including their basic information: name, gender, age, nationality, native place, political outlook, education, contact information, as well as self-evaluation, work experience, study experience, honor and achievements, job search desire, brief understanding of this job, etc.