Supply Chain

In commerce, a supply chain is a system within organizations, people, activities, information, and resources involved in supplying a product or service to a consumer. Supply chain activities involve the transformation of natural resources, raw materials, and components into a finished product and delivering the same to the end customer.[1] In sophisticated supply chain systems, used products may re-enter the supply chain at any point where residual value is recyclable. Supply chains link value chains.[2] Suppliers in a supply chain are often ranked by "tier", first-tier suppliers being those who supply direct to the client business, second-tier being suppliers to the first tier, etc.[3] https://en.wikipedia.org/wiki/Supply_chain