A BOM is a list of all the components needed to make a product or assembled part. Think of it as a recipe for your product, comprising both the raw materials and subassemblies needed to manufacture an end product. A BOM will also include part revisions and even instructions on how to repair a product. Your BOM will appear in several versions dependent on business use, beyond what is simply needed to design and manufacture your product. Engineering bill of materials (EBOM): This is designed by our engineers. The EBOM, which may be represented as a drawing or diagram, includes all parts of the assembly except shipping and packing material. Benefits of good BOM management :