This is a set of two books: "Credit Management Strategy and Practice" and "The Book to Understand Winning Patterns in Corporate Sales." The latter has some highlighter marks in 2-3 places near the beginning, but otherwise, there are no writings, scratches, or stains, so it is categorized as "No noticeable scratches or stains." This set of two books, "Credit Management Strategy and Practice," a practical guide to corporate credit management that is rarely seen, and "The Book to Understand Winning Patterns in Corporate Sales," a practical guide to corporate sales activities, can help strengthen your BtoB company's ability to increase sales while avoiding bad debts. It can also be effectively used as a reference for creating internal regulations.