Circular material use rate

Recirculation of materials, components and products in practice after first use employing the following strategies (in order of preference):
i. maintenance/prolonged use;
ii. reuse /redistribution;
iii. refurbishment/remanufacturing;
iv. recycling, composting, or anaerobic digestion.
The use rate is defined as the ratio of circular use of materials to overall use of materials.