Ключевые слова: approval, assurance, background, best, business, certificate, certified, choice, concept, conceptual, control, customer, design, development, efficiency, excellence, excellent, guarantee, hand, high, improve, improvement, information, isolated, label, letter, management, marketing, message, perfect, performance, premium, process, product, quality, reliability, reliable, satisfaction, service, strategy, success, superior, tag, text, top, value, warranty, white, word, work,