usiness success is based, among other things, on the ability to manage the company and to affect own position in the networks structures of the supplier-customer relations. Internal, but especially external processes, situated among company and its suppliers have an important role in optimization of business environment. Optimization of the supply chain is one of the tools, it means, that the optimization of a system is created by the business processes of all organizations, which are directly or indirectly involved in satisfaction of the customer requirements. Therefore an optimization must be on the level of producers, suppliers but also transporters, wholesalers and warehouses, retailers and ultimately of the customers. The supply chain is characterized by the reversible flow of material, financial and informational flows among its individual levels. Material flows represent distribution of the new products in direction from suppliers to the customers, after them in opposite direction the products are forwarded especially in process of reverse logistics for servicing, recycling or their disposal; we cannot forget also the financial and information flows. Thus, the supply chain includes the subjects and processes at the various levels. Part of the processes works in parallel; the streams in the chain are divided into network structure. We can say, that the supply chain can represent a multi-level network which does not have to include all levels from producers over consumers.