How the structure of the supply chain are available in multiple formats, there are many similar characteristics do not vary too much, which is the first model with flow characteristics of the upload stream. From the image 1 is a supplier of raw material supply (Supplier) to a distribution (Distributor), and down the stream they explode (Distributor) to consumer (Customer) To determine which points are at the same time, the stream, use the position of the company as consideration. A distribution (Distributor) that is on the left, the direction back to the sources of raw materials, it is called upload stream (Upstream) and for each point on the upload stream that supplied raw materials supply (Supplier) and vice versa. The company is on the right (direction heading towards the consumers) is called a down stream (Downstream) and for each point on the down stream that a consumer (Customer)
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