This paper introduces an RFID-enabled real-time manufacturing execution system (RT-MES) for mass-customization production (MCP) companies whose shop-floor management faces the challenges of manual and paper-based data collection, plans and schedules affected by large number of disturbances and high WIP inventory level. RFID devices are systematically deployed in MCP sites to create an RFID-enabled real-time ubiquitous manufacturing environment. In
the intelligent ambience, typical manufacturing resources are converted into smart objects (SOs) which can be traced and tracked and real-time production data can be collected. RFID-enabled RT-MES utilizes the real-time information to support real-time planning,scheduling, execution and control. A hybrid flow shop scheduling problem with k stages is discussed and solved with real-time job pools and various rules. With the help of real-time data collection and scheduling, visibility and traceability of materials is improved and WIP inventory is controlled in a certain level