Companies, mostly the end-producer of a product apply the Oiconomy Sustainability Assessment Tool. This leads the practitioner through all stages of the product life cycle and along all aspects of sustainability to calculate the preventative costs. The tool also helps to identify the main supplier. These also apply the assessment tool and share the preventative costs and share these costs with the end-producer.
For all details and a short video see: https://oiconomy.geo.uu.nl