The supply chain comes in many shapes and sizes. The most common and generic supply chain contains probably these four basic elements namely: suppliers, distributors, manufacturers and customers. To effectively manage your supply chain you first need to establish where do you sit in the supply chain and then what and who "touches" your goods before and after your "touch" in the supply chain. Understanding what comes before and after your "touch" is the basic element to understanding how the movements of items effects the supply chain. once you have successfully established your supply and demand for items then and only then can you being to build your management tool to monitor and improve your supply chain.