A circular economy is an economic model aimed at keeping resources in use for as long as possible, extracting the maximum value from them while in use, then recovering and regenerating products and materials at the end of each service life. Circular systems employ reuse, sharing, repair, refurbishment, remanufacturing and recycling, in which all “waste” becomes input for another process. This regenerative approach is in contrast to the traditional linear economy, which has a “take, make, dispose” model of production.