Know about customers. The customer is the most important persons of the salesman to attract customers, sales to รู้ความต้องการ customers and understand the minds of customers. Know the customer that is how long time ago.In order to find a way to meet the needs of customers is correct. Because each client types are different. How to sell won each customer is different too. If recognized by customers in every aspect., diverse, including immediate problem solving effectively.
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