Bill of Materials (BOM) is a complete list of compulsory materials and components in product manufacturing. BOM does not only encompass raw materials but also the assembly, sub-assembly, sub-component, and other parts in the production process.
The format of BOM varies depending on the manufacturing processes. However, there are two common BOM types. The first is BOM used in the engineering phase or product’s first development (eBOM). The second type is BOM associated with the time when the product enters the mass production phase and shipped to the customers (mBOM).