The role of 'circular economy' has taken a big step forward in many businesses, for cost recovery, product salvage, and also improving the environment. Research this term, and find examples of companies that are working in that space, and show how these attempts are helping businesses, consumers, and other stakeholders, within the sustainability space.

What are the strategic implementation and evaluation issues within this industry? 

Is it up to the hype or there are many areas that have to be reviewed and improved for such companies?