Update and maintenance. Shanghai Qusen Education Sales is responsible for developing and laying new markets, updating and maintaining old customers' products and reaching sales. Keep good communication with customers, grasp customer needs in real time, pay attention to, collect and integrate market information and customer information in time. Assist to solve the problems of the company's products in field application. Conduct customer training, product explanation, project development progress tracking and coordination, and promote large projects. Responsible for establishing and maintaining customer relationship, increasing customer stickiness and satisfaction.