Manufacturers and Wholesalers
Manufacturers produce goods from raw materials using machines and labor. Once production is complete, wholesalers purchase the goods and sell them to retailers. Wholesalers sell large quantities of goods to retailers at low prices.
Retailer (also known as the merchant)
Retailers purchase goods either from the wholesaler or directly from the manufacturer. From there they will sell those goods in small quantities to end users.
Consumer (end user)
Purchases goods from the retailer in small quantities to satisfy demand.