ll.Roles of the Distribution Channel 12-7 >The distribution channel totally constitutes the“stock”for the whole society.It has its own reason of existence. >Briefly,it helps the manufacturers to be social efficient and effective. 對计至（竹置多大孝 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 12－7 The distribution channel totally constitutes the “stock” for the whole society. It has its own reason of existence. Briefly, it helps the manufacturers to be social efficient and effective. II. Roles of the Distribution Channel