The "Product Structure Tree" - is a complex tool for reviewing any existing Product Structure as a multilevel hierarchical tree with unlimited number of branches. This tool allows evaluating the realistic demand and availability of any Components (including semi-products and low level raw materials and taking into account theirs current Balance details) for producing any Quantity of final Product. Using this tool, it is possible to answer to the typical question: "How many units of final Product can be produced without the risk of material shortages?". It's also possible to analyze the potential Cost of the final and intermediate Products playing with Average Cost or Purchase Prices (for purchased Parts) and Production Cost (for manufactured Parts). Thereby, this tool is highly recommended for different kind of Planners and Analysts.