Book (Practical) Commerce First, second, and third stream of sales

Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.

Commerce
『 This book aims to become a salesperson who can achieve both high levels of customer satisfaction and sales 』. It is a major premise for salespeople to be able to make sales. What is important is that sales consist of service charges ahead of CS. With customer satisfaction as the primary consideration, we substitute the word "first stream" to convey to the reader the intent that the by-product is sales.