1. Maintain existing customer, analyze existing markets, discover potential customers' needs, establish and develop new customer and new market, achieve sales targets;2. According to the characteristics of customer needs, to provide customers with the best product solutions;3. Responsible for business negotiations with customers and establish customer relationships4. Responsible for coordinating various internal and external resources, solving problems arising during project implementation, and improving customer satisfaction;5. Responsible for monitoring and executing the project payment process6. Responsible for customer reception work, exchange and interaction with customers