1-4.Concepts in Concept Development 9-7 。Product idea ●Product concept ●Category concept Brand concept ●Concept testing ”對至（竹置多大影 国际商学院市场营销学系 University of Intemational Business and Economics国际商学院 市场营销学系 9－7 I-4. Concepts in Concept Development  Product idea  Product concept  Category concept  Brand concept  Concept testing