1. Mechanical design regarding technical/Physical function of the change parts for Filler machine 2. Optimize the design and their components in a systematic way to fulfill the application requirement of variant 3. Recompose and confirm the change of drawing and documentation, and trace the impact of the changes 4. Design the parts with assembling drawings and 3D drawings and optimize the dimension 5. Archive related technical documents 6. Report all results and finding and give recommendations for improvements 7. Further actions and design adaptions