When you make a phone call, you usually choose normal working hours. After you get through, you will tell the personnel directly from which platform you saw the company's recruitment information and whether the company still needs to recruit this position. Then you will introduce your name, age, previous work, or good experience, where you used to work well and what advantages you have. Also express your interest in this industry and company, and I really hope to come to the company for an interview. Most personnel will ask you for your resume or come directly to the company for an interview. As long as you introduce yourself, most people will make an appointment for an interview directly.