1. 1) OECD: "Global material resources outlook to 2060," 2019
2. 2) E. Elhacham，他：“Global human-made mass exceeds all living biomass,” Nature, Vol. 588, pp. 442–444, 2020
3. 3) UNEP-IRP: "Re-defining value – The manufacturing revolution. Remanufacturing, refurbishment, repair and direct reuse in the circular economy," 2018
4. 4) U.S. International Trade Commission (USITC): "Remanufactured goods: An overview of the U.S. and global industries, markets, and trade," USITC Publication 4356, No. 332-525, 2013
5. 5) European Remanufacturing Network (ERN): "Remanufacturing market study," European Commission, 2015