Retailer Role in the Sorting Process Manufacturer BrandA Brand a Wholesaler Customers Manufacturer Brand B Brand B Customers Manufacturer Brand C Brand c Customers Wholesaler Retailer Manufacturer Brand D Brand D Customers Manufacturer Brand e Brand E Customers Wholesaler Manufacturer Brand F Brand F CustomersRetailer Wholesaler Wholesaler Wholesaler Manufacturer Brand C Manufacturer Brand D Manufacturer Brand A Manufacturer Brand B Manufacturer Brand E Manufacturer Brand F Brand A Customers Brand B Customers Brand C Customers Brand D Customers Brand E Customers Brand F Customers