The Impact of Digital Twins Technology in Manufacturing.

Can anyone who has employed Digital Twins to leverage digital technologies (such as IOT and digital automation) to enhance supply chain operational efficiency in manufacturing hubs?

Can you please share how it has impacted your:

Reference data is required 
- OEE
- Losses
- Waste (Cost - USD)
- Maintenance Cost
- Energy Cost
- Total Production Cost

Before and After the adoption of digital technologies.

Background: I am working on academic research with a colleague to defend the impact of Digita Twins Technology or refute its impact.

Thank you.