6. fai recognized to date: this knowledge includes knowledge of the customer's data is common and necessary because it makes it possible to "close the well" with the customer and to the handicap is sent to superior rivals Sale.
6. advocating always knew: that this knowledge, including knowledge and information needs of customers. It also makes it possible to "close the deal" with it. It is also a handicap for Sale over competitive products.
6. Can always know: knowledge here refers to the general knowledge and customer information needed, because in addition to the "ปิดดี al." With the customers. Also a handicap to Sale over competition.