In this study, the legacy data of the MES system of rubber extruder company A and the FOM solution are integrated and analyzed. Owing to the characteristics of the manufacturer, 4M changes that occur frequently in existing legacy data can only be managed to a certain extent. Therefore, in this study, the MES system and FOM solution are integrated to obtain the visibility of 4M data at the manufacturing side, and a systematic and multidimensional analysis based on code is performed. If the unit price values for more diverse products are defined, then more detailed loss costs can be calculated for all productivity inhibitors. By overcoming the limitations of MES data management and making decisions to effectively improve data-based productivity using the analysis results of this study, company A is expected to benefit factory operations management.