fig4
![Leveraging the GQM+ Strategy approach and Industry 4.0 technologies for environmental sustainability in manufacturing](https://image.oaes.cc/45b2febf-fcfe-44b4-b70d-3c28eaf96c3a/5207.fig.4.jpg)
Figure 4. Professional maintenance application to support maintenance planning and execution.
Figure 4. Professional maintenance application to support maintenance planning and execution.
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