Sales is a position set by the company, trying to sell products to customers in various ways. Online products are generally sold to customers by telephone and internet, while offline products are sold by interview and demonstration.
Both belong to different departments within the company, and customer service plays an auxiliary role in sales. There is a close relationship between the two. In order to promote products, sometimes sales need to do customer service, and agreeing to customer service may also promote product sales in the service. Because of the performance appraisal of the company now, these jobs are profitable.