A trade path or channel of distribution or channel of trade refers generally to the route through which a product must travel to reach the consumer.  In 

The path through which goods and services travel from the vendor to the consumer or payments for those products travel from the consumer to the vendor. A distribution channel can be as short as a direct transaction from the vendor to the consumer, or may include several interconnected intermediaries along the way such as wholesalers, distributers, agents and retailers.