Name confirmation by phone - China location

Hi and thank you for reading. We need to confirm 15 people work for a particular companies in China. Ideally we would also like to confirm their job titles. The task is to look at a list the names we give you, phone the company switch board number we give you and confirm the person works there. A bonus is if we can confirm the persons job title is correct. Once the people are confirmed we would like to reach out to them about future job opportunities. The first step is to confirm they are relevant and working in the companies of interest. We need this completed as soon as possible. Thank you!