A company recruitment saw: customer service sales, some sales offices. What do you mean? What is it for?

Customer service sales is to contact customers or face-to-face interviews with customers and let them buy things. Some sales offices manage warehouses or record late arrivals and early departures, that is to say, not for customers but for people inside the company. It may also be managing customer data. In short, different bosses, different sayings and different jobs will do it.