1. Based on customer information, market information (based on collected information about competitive suppliers and analysis results), business strategy formulation (sales expansion), communication and exchange, adjust with the relevant departments. 2. Make annual plans, promote business activities. 3. Offer the sale price, negotiate the selling price with customers. 4. Manage quotes, sales prices, information to customers. 5. Receive all information related to the purchase and sale of goods from customers and information to relevant departments. 6. After-sales customer care. 7. Other jobs at the request of superiors.