id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
cet-14362		cet-14362		6	.pdf	application/pdf	4296	202	26	Key challenges include tracing material reuse and involving multiple stakeholders in circular supply chains. Huang et al. (2022) highlighted the significance of blockchain and IoT in creating sustainable circular supply chains.	cache/cet-14362.pdf	txt/cet-14362.txt