I.Characteristics of Business Markets 4-4 Market Structure and Demand Nature of Buying Unit Types of Decisions and Decision Process Other Characteristics ”對至（的宜多大差 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 4－4  Market Structure and Demand  Nature of Buying Unit  Types of Decisions and Decision Process  Other Characteristics I. Characteristics of Business Markets