What is the difference between E-BOM and M-BOM?

E-BOM: a list of materials used by an ERP system, known as a manufacturing BOM (Manufacturing BOM, M-BOM), a cad-generated BOM (Engineering BOM, E-BOM ).
E-BOM is usually limited to the drawings and parts of the list of materials appear in the hierarchy and subordination of the drawings, do a good job of technical documentation management, although there are also guide the procurement and quotation estimation function, however, it is mainly used to manage drawings. There is a fundamental difference in their use.

M-BOM: M-BOM is an indispensable management file for running ERP system, it is the report format of "Product Structure on Time Coordinate", or, it is a report format that integrates the sales-production-supply information of three major core businesses in the manufacturing industry into a data model.

The M-BOM sees that each item in the bill of materials is linked to the business that handles the item, mainly to meet the sales plan and prepare the processing and procurement plan, consider materials as planned objects, inventory objects, and cost objects. Therefore, not only all related materials must be included, but also must be described according to the actual processing and assembly process.